Pronouns, Possessives, and Modifiers
Keep every reference, ownership relationship, and description attached to the right noun.
By the end, you should be able to:
- Trace pronouns to their intended antecedents through complex sentences.
- Distinguish plain plurals, possessives, and contractions without relying on sound.
- Attach introductory and internal modifiers to the correct logical subject.
- Check several grammatical constraints independently in the same answer choice.
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4.1 Pronoun agreement: identify the actual antecedent
A pronoun takes the place of a noun or noun phrase, called its antecedent. To choose a pronoun, identify the exact thing or person it represents. Then check number, person, and the pronoun's job in the sentence. In "The lamps arrived, and we installed them," them represents the plural noun lamps. An object pronoun belongs after installed; the possessive determiner their would need a following noun.
Do not let a nearby noun take control merely because it is closer to the blank. Nor should you change the passage's point of view without a reason. A description of "the researchers" normally continues with they, not an unexplained we or you. Direct quotations and explicit changes of speaker can, of course, change the point of view.
Use a replacement check: read the antecedent in place of the proposed pronoun. Does the sentence still describe the intended participant? Then restore the pronoun and check its form. For a singular person, they/them/their can be valid. Do not assume gender or reject singular they simply because the antecedent is singular.
Job | Singular example | Plural example |
|---|---|---|
Subject | The instrument works. It works. | The instruments work. They work. |
Object | We tested the instrument. We tested it. | We tested the instruments. We tested them. |
Before an owned noun | its casing | their casings |
W4.1: Keep number and grammatical job separate
A museum is digitizing three clay tablets. Because the tablets contain shallow marks that are difficult to see in ordinary photographs, a technician photographs ______ under several lighting conditions before combining the images into a digital record.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. it
B. their
C. them
D. its
Practice this lesson: 4.05, 4.06.
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Answer: C
Completed text: A museum is digitizing three clay tablets. Because the tablets contain shallow marks that are difficult to see in ordinary photographs, a technician photographs them under several lighting conditions before combining the images into a digital record.
- The items being photographed are the three clay tablets. The plural antecedent calls for a plural pronoun.
- The blank is the direct object of photographs: the technician photographs something. The required form is them.
- Insert them and reread the whole clause. The technician photographs the tablets under several lighting conditions; neither the number nor the intended object changes.
Why A fails: It is singular, but the passage identifies three tablets as the objects being photographed. There is no single tablet or other singular photographic subject to substitute here.
Why B fails: Their is a possessive determiner and needs an owned noun, as in their surfaces. It cannot stand alone as the direct object of photographs.
Why D fails: Its is a singular possessive determiner. It both mismatches the plural tablets and lacks the following noun that a possessive determiner requires.
Key takeaway: First identify what the pronoun replaces; then identify the position it fills. A form can fail the number test, the grammatical-job test, or both.
4.2 Pronouns through complex noun phrases
In a long noun phrase, separate the head noun from the words that describe it. In "the covers of the manuscript," the head is covers; the phrase names several covers. In "the manuscript with the damaged covers," the head is manuscript; the phrase names one manuscript. A later pronoun referring to the whole phrase follows that head, not whichever noun appears last.
Reference also depends on meaning. A plural noun earlier in a passage does not automatically license every later them. Ask what the writer actually repairs, measures, carries, or compares. If the context distinguishes one selected item from a larger set, preserve that distinction. When two antecedents remain possible, repeating the intended noun can clarify a revision; however, a merely clearer style does not by itself make every pronoun alternative ungrammatical.
Singular they uses the familiar verb forms they are and they have. "Each applicant said they were ready" can be standard English. Do not turn this chapter into a rule that every singular antecedent requires he, she, or it. Identify the referent before applying an agreement rule.
W4.2: The nearby plural is not the item being replaced
A conservator examined a cabinet with three removable shelves. The cabinet itself was sound, but its uppermost shelf had split. After removing that shelf and leaving the other two in place, the conservator replaced ______ with a newly cut board.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. it
B. them
C. their
D. its
Practice this lesson: 4.07, 4.08.
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Answer: A
Completed text: A conservator examined a cabinet with three removable shelves. The cabinet itself was sound, but its uppermost shelf had split. After removing that shelf and leaving the other two in place, the conservator replaced it with a newly cut board.
- Track the actions: the conservator removes that shelf, leaves two others in place, and replaces the removed shelf.
- The intended object is one shelf. The singular object pronoun it preserves that reference.
- Do not let three removable shelves attract a plural pronoun. Replacing them would describe replacing the group, contrary to the explicit distinction between the removed shelf and the two retained shelves.
Why B fails: Them refers to plural items. Here the passage specifies that just the split shelf is removed and replaced; the other two remain in place.
Why C fails: Their cannot act alone as the object of replaced. A possessive determiner would need a noun, and the intended replacement concerns one shelf.
Why D fails: Its also needs a following noun. The sentence requires the shelf itself as the object of replaced, not an unfinished phrase naming something owned by the shelf.
Key takeaway: Head nouns help establish number; the sequence of actions establishes which noun is the antecedent. Use both kinds of evidence.
4.3 Plain plurals and singular or plural possessives
An ordinary plural names more than one item: maps, artists, children. An apostrophe does not make that plural. A possessive, also called a genitive, links an owner or related entity to another noun: the artist's sketch, the artists' sketches, the children's sketches. The relationship need not be literal ownership; the experiment's duration is also possessive.
Use two separate decisions. First decide how many owners the passage identifies. Then form the possessive of that owner word. One artist becomes artist's. Several artists become artists'. An irregular plural that does not end in s, such as children or women, takes 's: children's, women's. Finally, check how many owned items the context requires.
Do not infer the number of owners from the number of possessions. One artist can keep many notebooks; several artists can share one studio. Also, some nouns modify other nouns without possession, as in stone wall. Use the actual grammatical relationship rather than inserting an apostrophe whenever two nouns occur together.
Meaning | Form | Reason |
|---|---|---|
Several plain owners | sculptors | Ordinary plural; no apostrophe. |
One owner | the sculptor's tools | Singular noun + apostrophe-s. |
Several owners; plural ends in s | the sculptors' tools | Regular plural + apostrophe. |
Several owners; irregular plural | the children's tools | Plural does not end in s; add apostrophe-s. |
W4.3: One owner can have many possessions
The archive received the papers of exactly one sculptor. Among the donated materials were six notebooks in which that sculptor recorded the costs of stone and metal. The archivist used the ______ entries to reconstruct the expenses of individual projects.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. sculptors notebooks'
B. sculptors' notebooks'
C. sculptor's notebooks
D. sculptor's notebooks'
Practice this lesson: 4.09, 4.10.
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Answer: D
Completed text: The archive received the papers of exactly one sculptor. Among the donated materials were six notebooks in which that sculptor recorded the costs of stone and metal. The archivist used the sculptor's notebooks' entries to reconstruct the expenses of individual projects.
- The passage identifies exactly one sculptor, so the first possessive must be sculptor's.
- The six notebooks supply the entries being used. Their plural noun is notebooks; its possessive is notebooks'.
- Read the chain from right to left: entries belonging to the notebooks, which belong to one sculptor. Sculptor's notebooks' expresses both relationships.
Why A fails: Sculptors has no possessive ending to connect the sculptor to the notebooks, and it names several sculptors rather than the one specified.
Why B fails: Sculptors' is a valid possessive for multiple sculptors, but the passage explicitly identifies one sculptor. Correct spelling alone is insufficient when the number is wrong.
Why C fails: Notebooks is a plain plural, but here the following noun entries requires a possessive link: the entries belong to the notebooks. The plural possessive is notebooks'.
Key takeaway: Read every ownership link separately. A correct first apostrophe cannot rescue a second one that changes the stated number of owners.
4.4 Multiple owners and possessive chains
A phrase can identify two owners together: Nora and Eli's shared studio. The conventional joint-ownership form puts the possessive ending on the final name. To express separate ownership explicitly, use a possessive for each owner: Nora's and Eli's separate studios. Read the context and the owned noun; do not assume that two named people must own different things.
Possessive chains require a different check. In the director's assistants' schedules, the schedules belong to several assistants, and those assistants work for one director. Work backward from the final noun: whose schedules? The assistants'. Whose assistants? The director's. Determine number at each level instead of copying the same apostrophe pattern through the phrase.
A possessive is not always required when a noun describes a category: research team and school library are ordinary noun combinations. Conversely, a clearly specified ownership relationship may require possessive marking. In these exercises, the context supplies the relevant owners and quantities. Do not rely on what organizations usually contain, or on a stylistic preference for a possessive over an equally valid of phrase.
W4.4: Two ownership decisions in one phrase
One conservator supervised three assistants, each of whom kept exactly one treatment log. At the end of the project, an auditor compared all three logs with the official inventory. The auditor found that all three of the ______ logs agreed on the number of objects treated.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. conservators' assistant's
B. conservator's assistants'
C. conservator's assistant's
D. conservators assistants'
Practice this lesson: 4.11, 4.12.
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Answer: B
Completed text: One conservator supervised three assistants, each of whom kept exactly one treatment log. At the end of the project, an auditor compared all three logs with the official inventory. The auditor found that all three of the conservator's assistants' logs agreed on the number of objects treated.
- The supervisor is one conservator. The first ownership link therefore requires conservator's.
- The logs belong to three assistants, with one log per assistant. The second link requires the plural possessive assistants'.
- Substitute the meaning: the logs of the assistants of the conservator. The combination conservator's assistants' matches the passage at both levels.
Why A fails: Conservators' names multiple conservators, while assistant's names one assistant. Both numbers contradict the explicitly stated staffing.
Why C fails: The first possessive is correct, but assistant's assigns the logs to one assistant. Each assistant kept exactly one log, so a single assistant cannot supply all three logs required in the tested sentence.
Why D fails: Conservators is a plain plural with no possessive marking. It neither identifies the single conservator nor expresses the required relationship to that conservator's assistants.
Key takeaway: For a possessive chain, ask whose? once per link. Check the owner count at each answer rather than treating the chain as one spelling problem.
4.5 Possessives and contractions that sound alike
Sound cannot distinguish its from it's, but grammar can. Expand the contraction. It's means it is or it has; its shows possession. In "the telescope changed its position," neither "it is position" nor "it has position" supplies the intended construction. In "it's been repaired," the expansion is "it has been repaired."
Use the same method for they're (they are), you're (you are), and who's (who is or who has). Their possessive counterparts are their, your, and whose. There can name a place or introduce a construction such as "there are three copies." It does not show ownership. Possessive pronouns and determiners such as its, theirs, and yours do not take apostrophes.
On a harder question, a choice may contain two or three of these forms. Expand each contraction independently, then check each possessive against its antecedent. Do not choose an option because its first word works. Also, whose can refer to a thing: "a telescope whose mirror was damaged" is grammatical.
Form | Use | Check |
|---|---|---|
its / it's | possession / it is or it has | its lens / it's focusing / it's been adjusted |
their / they're / there | possession / they are / place or introductory there | their seats / they're ready / there are seats |
your / you're | possession / you are | your notes / you're reviewing |
whose / who's | possession / who is or who has | whose notes / who's ready / who's arrived |
W4.5: Expand both parts of a choice
The observatory is replacing several aging instruments. According to a notice on its website, ______ equipment collection, but the public viewing room will remain open throughout the work. The notice describes the replacement schedule in detail.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. its updating it's
B. it's updating it's
C. it's updating its
D. its updating its
Practice this lesson: 4.13, 4.14.
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Answer: C
Completed text: The observatory is replacing several aging instruments. According to a notice on its website, it's updating its equipment collection, but the public viewing room will remain open throughout the work. The notice describes the replacement schedule in detail.
- The clause after the introductory phrase needs a subject and a finite verb. It's updating expands to it is updating, with it referring to the observatory.
- The noun phrase equipment collection belongs to the observatory. Its equipment collection uses the possessive determiner without an apostrophe.
- Read the expanded version: it is updating its equipment collection. This supplies a complete clause and preserves the ownership relationship.
Why A fails: The initial its is possessive and cannot supply it is before updating. The later it's would expand to it is or it has before equipment collection, where a possessive determiner is required.
Why B fails: The first contraction is correct. The second it's creates it is equipment collection or it has equipment collection after updating, neither of which forms the required object noun phrase.
Why D fails: The final its correctly marks possession, but the initial its leaves the clause without the required it is. The phrase its updating its equipment collection does not supply the finite predicate required before the coordinating but.
Key takeaway: Apostrophes in these forms mark missing letters, not ownership. Expand first; then check whether the sentence needs a clause or an owned noun.
4.6 Introductory modifiers and their logical subjects
An introductory modifier often gives information about the subject of the main clause. In "Carrying two sample cases, the geologist entered the lab," the geologist carries the cases. If the main subject were the lab door, the modifier would assign that action to the wrong thing. This is a dangling modifier: the intended actor does not occupy the position the construction requires.
Use an actor-or-object test. For an active phrase such as measuring the specimen, ask who does the measuring. For a passive description such as sealed in a glass tube, ask what is sealed. Then identify the head of the entire main-clause subject. "The scientist's measurements" has measurements as its head; the presence of the word scientist does not make the scientist the subject.
Passive voice is allowed. "Sealed in a glass tube, the specimen was stored in a cabinet" attaches correctly. Also, a full introductory clause can state its own actor: "After the scientist measured the specimen, the results were recorded." The modifier problem arises when a phrase relies on the main subject and that subject cannot logically carry the description.
W4.6: A passive description needs the described object
A research team collected three fragments of a brittle mineral. Each fragment was wrapped separately and placed in a padded container. Carefully protected from vibration during transport, ______ until a technician could examine them under a microscope.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. the technician kept the fragments in storage
B. the fragments' fragility kept the technician waiting
C. the team's storage procedure preserved the fragments
D. the fragments were kept in storage
Practice this lesson: 4.15, 4.16.
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Answer: D
Completed text: A research team collected three fragments of a brittle mineral. Each fragment was wrapped separately and placed in a padded container. Carefully protected from vibration during transport, the fragments were kept in storage until a technician could examine them under a microscope.
- Ask what was carefully protected from vibration. The preceding sentences identify the mineral fragments as the protected objects.
- The main subject must be the fragments. Choice D supplies that subject and the complete passive predicate were kept in storage.
- Check the ending: them refers back to the plural fragments. Passive voice creates no problem because the opening description and main subject match.
Why A fails: The main subject is the technician, so the opening phrase would describe the technician as protected from vibration during transport. The passage describes the fragments that way.
Why B fails: The head of the subject is fragility, an abstract property. It is not the physical object wrapped and protected from vibration; a possessive mention of fragments does not make them the subject.
Why C fails: The head of the subject is procedure. A procedure is not the physical material that was wrapped and protected during transport; mentioning fragments later does not repair the attachment.
Key takeaway: Do not search only for the person doing the action. A passive introductory phrase often correctly describes an object that is also the main-clause subject.
4.7 Modifier placement inside a sentence
A modifier must describe the intended noun wherever it appears. Compare "The technician, inspecting the lens, noticed a crack" with "The technician noticed a crack, inspecting the lens." The second version can create an awkward or uncertain attachment; placement beside the intended noun is often clearer. On a multiple-choice test, however, reject an alternative for a demonstrated grammatical or logical failure, not merely because another version feels smoother.
For a phrase inserted between commas, identify the noun it supplements and check the phrase's form. "The technician, inspecting the lens, noticed a crack" contains one finite main verb, noticed, plus a participial description, inspecting the lens. "The technician, inspected the lens, noticed a crack" incorrectly puts an additional finite predicate into that comma-delimited position.
Meaning matters as well as form. "The crate holding the instruments" identifies the crate as the container; "the instruments holding the crate" reverses that relation. Place a descriptive phrase so that it gives the intended actor or object the stated property. Words such as only can also change meaning with placement, but do not treat every possible alternative position as a grammatical error.
W4.7: A modifier can interrupt the subject and verb
The only person in the workroom was a microscopist checking a damaged lens. The microscopist, ______, noticed a hairline crack near its edge and set the lens aside for a more detailed examination the following morning.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. examining the lens under a bright lamp
B. examined the lens under a bright lamp
C. having examining the lens under a bright lamp
D. whose inspection of the lens under a bright lamp
Practice this lesson: 4.17, 4.18.
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Answer: A
Completed text: The only person in the workroom was a microscopist checking a damaged lens. The microscopist, examining the lens under a bright lamp, noticed a hairline crack near its edge and set the lens aside for a more detailed examination the following morning.
- The main clause is The microscopist noticed a hairline crack. The material between the commas describes the microscopist during that action.
- Examining the lens under a bright lamp is a participial phrase with the microscopist as its logical actor. The lens is its object.
- Check that the choice preserves the stated situation. The microscopist is checking the damaged lens, so examining the lens correctly describes that action.
Why B fails: Examined the lens is an additional finite predicate, not a participial modifier in this construction. The commas alone do not coordinate examined and noticed or make examined the lens a grammatical supplement.
Why C fails: Having requires a past participle to form this perfect participial phrase: having examined, not having examining. The offered auxiliary chain is malformed.
Why D fails: Whose begins a relative construction, but whose inspection of the lens under a bright lamp contains no finite verb to complete that clause. The later noticed belongs to the main clause and cannot supply the missing verb inside the comma pair.
Key takeaway: Find the main clause first. An inserted description must have the right grammatical form and must assign its action to the actual subject.
4.8 Combine reference, ownership, and modifier checks
A difficult conventions question may vary several features at once. Avoid judging each option as a single impression. Make a short checklist from the differences: Who is the subject? What does the pronoun replace? How many owners are there? Check these constraints one at a time. The correct choice must satisfy all of them in the completed sentence.
Start with the sentence structure. If an opening phrase describes an action, identify the participant it describes before reading the choices: the actor for an active phrase, or the affected object for a passive phrase. Next trace each pronoun to its intended antecedent, even across a phrase containing a competing noun. Finally, verify any possessives by counting owners and owned items separately. This order prevents a correctly spelled apostrophe from distracting you from a dangling modifier.
Do a final literal insertion, including every surrounding word and punctuation mark. Read enough of the passage to preserve any stated number, ownership, or sequence of actions. An option that could work in a different story is not correct here. At the same time, do not invent extra restrictions: an acceptable passive construction or singular they does not become wrong simply because another form is more familiar.
W4.8: The subject must act, and the pronoun must match
A curator personally cataloged four paintings donated by two artists. The curator then recorded the location of every painting so that each could be retrieved for an upcoming exhibition. After cataloging all four paintings, ______ in the museum's database.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. the curator's records listed their locations
B. the curator listed their locations
C. the curator listed its locations
D. the paintings listed their locations
Practice this lesson: 4.19, 4.20.
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Answer: B
Completed text: A curator personally cataloged four paintings donated by two artists. The curator then recorded the location of every painting so that each could be retrieved for an upcoming exhibition. After cataloging all four paintings, the curator listed their locations in the museum's database.
- After cataloging all four paintings requires the curator as the actor of the main clause. Records and paintings cannot perform that cataloging action.
- The locations belong to the four paintings. The plural possessive determiner their preserves that reference.
- Insert the curator listed their locations. The sentence now has the correct actor, a finite verb, and a pronoun that refers to the plural paintings.
Why A fails: The head of the subject is records, not curator. The introductory phrase therefore assigns cataloging to the records. A possessive mention of the curator does not make the curator the main subject.
Why C fails: The curator is the correct subject, but its refers to a singular thing. The passage requires the locations of all four paintings, so their is the appropriate possessive determiner.
Why D fails: The paintings become the actor of both cataloging and listing. The passage explicitly identifies the curator as the person performing those actions.
Key takeaway: Do not stop after one feature works. A choice must pass the subject, reference, and ownership checks that the sentence actually requires.
Independent practice
Keep these checks in mind
• Name the intended antecedent before choosing a pronoun; check number, person, and grammatical job.
• Count owners and owned items separately, then form each possessive.
• Expand contractions such as it's and they're; possession alone does not require an apostrophe.
• Match each modifier to the actor or object it describes, using the head of the full subject phrase.
• Insert the entire answer and verify every changed feature; grammatical form and supplied context must both fit.
Begin with four short reasoning drills, then complete sixteen multiple-choice questions. For each answer, identify the decisive rule and the flaw in the nearest competitor. Some drills admit more than one valid repair; explain why your revision works.
These four written drills are ungraded. Write your reasoning before opening each model answer.
Drill 4.01
Three handles on a single cabinet were loose. The repairer replaced only the handles, leaving the cabinet itself unchanged.
Complete the repair report with a pronoun: "The handles on the cabinet were loose, so I replaced ______." Name the antecedent and explain why the nearby singular noun does not control the pronoun.
Write a brief answer and identify the words that justify it.
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Identify the antecedent through a prepositional phrase | Review lesson 4.2
Answer: "The handles on the cabinet were loose, so I replaced them." The antecedent is the plural noun handles.
The direct object of replaced must identify what the repairer actually replaced. The passage specifies all three handles and explicitly excludes replacement of the cabinet. Cabinet occurs inside the prepositional phrase on the cabinet; its proximity to the pronoun does not change the intended antecedent. Them is both plural and the appropriate object form.
If you missed it: Underline the object that the action actually affects. Cross-check that object against the stated sequence of events before choosing a pronoun.
Drill 4.02
Exactly one artist supervised seven children. Each child made one drawing. The artist also made one drawing, and all eight drawings were displayed.
Write two noun phrases: one naming the artist's single drawing and one naming all seven drawings made by the children. Explain each apostrophe and each noun ending.
Write a brief answer and identify the words that justify it.
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Build singular and irregular-plural possessives | Review lesson 4.3
Answer: The artist's drawing; the children's drawings.
Artist names one owner, so artist's uses apostrophe-s. Drawing is singular because the artist made one. Children is already an irregular plural and does not end in s, so its possessive is children's, not childrens'. Drawings is an ordinary plural naming seven owned items; it takes no apostrophe because the phrase ends there and the drawings are not being made possessive.
If you missed it: Write a small count above each noun: one artist, one drawing; seven children, seven drawings. Form ownership and plurality in separate steps.
Review lesson: 4.3 Plain plurals and singular or plural possessives
Drill 4.03
The students say they're ready to present their work there. The tutor asks, "Is your group ready? You're next."
Expand every contraction. Then identify the possessive words and the word that refers to a place.
Write a brief answer and identify the words that justify it.
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Expand contractions without altering possessives or place words | Review lesson 4.5
Answer: "The students say they are ready to present their work there. The tutor asks, 'Is your group ready? You are next.'" Their and your are possessive determiners. There refers to the presentation location.
They're expands to they are, and you're expands to you are. Their introduces the noun work, identifying whose work it is; your introduces group. Neither possessive contains omitted letters or takes an apostrophe. There refers to a location and is neither a contraction nor a possessive. Similar pronunciation does not make these forms interchangeable.
If you missed it: Read the expanded words aloud within the sentence. If an expansion creates the wrong grammatical structure, return to the possessive or place form.
Review lesson: 4.5 Possessives and contractions that sound alike
Drill 4.04
After measuring the specimen, the results were recorded by the scientist.
Revise the sentence so that the scientist clearly performs the measuring. Give one revision with the scientist as the main subject and one that keeps the passive main clause.
Write a brief answer and identify the words that justify it.
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Repair a dangling modifier in two valid ways | Review lesson 4.6
Answer: "After measuring the specimen, the scientist recorded the results." Also valid: "After the scientist measured the specimen, the results were recorded by the scientist." Other revisions are acceptable if they explicitly assign the measuring to the scientist and form a complete sentence.
In the original, the phrase After measuring the specimen relies on the main subject for its actor, but that subject is results. Results cannot measure a specimen. The first repair makes scientist the main subject. The second gives the introductory clause its own explicit subject and finite verb, so the passive main clause no longer creates a dangling attachment. Passive voice itself was never the error.
If you missed it: Ask who performs the introductory action. Either make that actor the main subject or turn the opening into a complete dependent clause naming the actor.
Review lesson: 4.6 Introductory modifiers and their logical subjects