Digital SAT · Form, Structure & Sense
How to Solve Plurals and Possessives on the Digital SAT
The choices are the same noun or pronoun in plural and possessive forms, and you pick the one the sentence needs. Ask two questions: is the word showing ownership, and is it one owner or more than one. That settles apostrophe placement, dog's versus dogs' versus dogs. For pronouns, the split is its versus it's and their versus they're, where the apostrophe means a contraction, not possession. The sentence's meaning, not the sound, decides.
- per test
- less than 1 per test per test
- typical difficulty
- Medium typical difficulty
- practice questions
- 118 practice questions
Frequency reflects how often this question type appears on a full-length Digital SAT. The difficulty mix reflects every question of this type across our bank.
What the question bank shows
The forms are pronounced alike; only what the word does in the sentence decides.
It's and they're are contractions; the possessives its and their take no apostrophe.
Across the bank the contraction it's appears as a choice repeatedly and is rarely the answer.
How to recognize plurals and possessives questions
- The choices differ only in apostrophe and plural endings.
- The word could show ownership, plurality, or a contraction.
- Pronoun items pit its against it's or their against they're.
- The prompt tests noun and pronoun form, not agreement.
Why students miss these
The step-by-step method
- 1
Ask if it shows ownership
Decide whether the word possesses something or is just plural.
- 2
Count the owners
One owner takes 's; more than one owner takes s' after the plural.
- 3
Test pronoun apostrophes
Expand it's to it is and they're to they are; if that fails, use the possessive its or their.
- 4
Confirm against meaning
Reread the sentence to check the chosen form matches what the word is doing.
Worked examples
Easy example
The American writer Toni Morrison published her first novel in 1970 and later became the first Black woman to win the Nobel Prize in Literature. Today the ______ early manuscripts are kept in a university archive, where scholars carefully study her many handwritten notes and revisions.
A: Correct. The manuscripts belong to one writer, Toni Morrison, so the singular possessive "author's" is required.
B: Incorrect. "authors'" is plural possessive and wrongly implies that several authors share the manuscripts.
C: Incorrect. "authors" is a plain plural with no apostrophe, so it cannot show possession of the manuscripts.
D: Incorrect. "author" is a singular noun that leaves the phrase without the needed possessive form.
Explanation
The manuscripts belong to a single author, Toni Morrison, so use the singular possessive: add an apostrophe and -s to get "author's."
Easy example
During the Age of Exploration, long ocean voyages could last for many months at a time. Historians note that the ______ diaries, filled with detailed sketches and daily entries, now help researchers understand what life aboard these crowded wooden ships was really like at sea.
A: Incorrect. "sailor's" is singular possessive and wrongly suggests the diaries belong to a single sailor.
B: Incorrect. "sailors" is a plain plural with no apostrophe and cannot show that the diaries belong to the sailors.
C: Correct. The diaries belong to the many sailors, so the plural possessive "sailors'" places the apostrophe after the -s.
D: Incorrect. "sailor" is a singular noun that leaves the phrase without the needed possessive form.
Explanation
The diaries belong to more than one sailor, so a plural possessive is needed: form "sailors" and add an apostrophe after the -s to get "sailors'."
Easy example
The German composer Ludwig van Beethoven continued to write music even after he had completely lost his hearing. Scholars are still amazed that the ______ later symphonies, including the famous Ninth, were composed during a period when he could not hear a single note of them.
A: Incorrect. "composers'" is plural possessive and wrongly implies that several composers share the symphonies.
B: Correct. The symphonies belong to one composer, Beethoven, so the singular possessive "composer's" is required.
C: Incorrect. "composers" is a plain plural with no apostrophe, so it cannot show possession of the symphonies.
D: Incorrect. "composer" is a singular noun that leaves the phrase without the needed possessive form.
Explanation
The symphonies belong to a single composer, Beethoven, so use the singular possessive: add an apostrophe and -s to get "composer's."
The common traps
| Pattern | What it does | The tell |
|---|---|---|
| Contraction for possessive | Used it's or they're where the possessive its or their was needed. | Expand the contraction; if it is or they are does not fit, use the possessive. |
| Wrong owner count | Placed the apostrophe for one owner when the sentence meant several. | Decide singular or plural first, then place the apostrophe. |
| Apostrophe on a plain plural | Added an apostrophe to a noun that is only plural, not possessive. | No ownership means no apostrophe. |
Try it: two real questions
Marine biologist Ellen Prager has studied sea turtles along Florida's Atlantic coast for more than two decades. Each summer she returns to the same stretch of sand to track the ______ nesting habits, carefully recording how many eggs the animals bury before slipping back into the surf.
Which choice completes the text so that it conforms to the conventions of Standard English?
A community garden in downtown Detroit gives dozens of neighborhood families a shared place to grow fresh vegetables. Volunteers keep a small shed near the entrance where the ______ tools are stored, so members can borrow rakes and trowels whenever they arrive to work their plots.
Which choice completes the text so that it conforms to the conventions of Standard English?
Question 3 is ready when you are
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Related reading
Common questions
How do you tell its from it's on the SAT?
Expand it's to it is. If the sentence still makes sense, it's is correct; if not, use the possessive its, which has no apostrophe. The same test works for their versus they're.
Where does the apostrophe go for a possessive?
For one owner, add 's (the student's book). For more than one owner ending in s, add just an apostrophe (the students' books). Decide the number of owners before placing it.
Does a plural noun ever take an apostrophe?
Only if it is also possessive. A plain plural, like three dogs, takes no apostrophe. Add one only when the plural noun owns something, as in the dogs' leashes.
Why can't I trust how it sounds?
Because the forms are pronounced the same. Its and it's, their and they're, dog's and dogs' are audibly identical, so only the meaning, ownership versus contraction versus plural, tells them apart.
Practice plurals and possessives the way it is tested
Start with the free 16-question diagnostic, then drill this type with step-by-step reasoning on every question.
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