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Form, Structure, and Sense: SAT Reading and Writing notes
Form, Structure, and Sense questions test whether the words in a sentence fit together: verbs that match their subjects and the timeline, pronouns and nouns in the right number and possessive form, and opening phrases that sit next to the thing they describe.
Study it with worked examples and 8 practice questionsPractise Form, Structure, and Sense questions
What this topic tests
These questions look like Boundaries questions: a sentence with a blank and the same prompt about the conventions of Standard English. The difference is that the choices change the words themselves, not the punctuation. You’ll see one verb in four forms (studies, study, are studying, have studied), a pronoun in four versions (its, it’s, their, they’re), a noun with and without apostrophes, or four different ways to word the end of a sentence.
One habit solves almost all of them: find the word the blank has to fit with. A verb has to fit its subject and the time the passage describes. A pronoun has to fit the noun it stands for. An opening phrase has to sit right next to the thing it describes. Once you’ve found that partner, usually only one choice matches.
The SAT makes this harder by putting distance between the partners. Long descriptions, which clauses, dashes and parentheses often sit between a subject and its verb, and the noun closest to the blank is often the wrong one. So slow down, strip the sentence back to its skeleton, and then choose.
Key ideas
- To find a subject, ask who or what is doing the verb. Skip over phrases starting with of, in or with, which and who clauses, and anything between commas, dashes or parentheses.
- A singular subject takes a singular verb (it studies, it was), and a plural subject takes a plural verb (they study, they were). Each, every and one are singular, even in “each one of these plays”.
- Two subjects joined by and are plural, so they take a plural verb.
- Every clause needs one main verb with a tense, like studies, kept or had served. Forms like examining, to join and having referred can’t do that job alone. They only add detail to a clause that already has its main verb.
- Match the tense to the timeline. Use had plus the past form (had served) for something that happened before another past event, and has or have (has collected) for something that started in the past and is still going on.
- Its shows ownership, and it’s means it is. Their shows ownership, and they’re means they are. A single thing, group or organization is it, not they.
- Apostrophes show ownership, never just “more than one”. One owner: author’s. Several owners whose plural ends in s: authors’. Several with no ownership: authors.
- An opening phrase with no subject of its own, like “Far from being modern inventions,”, describes whatever comes right after the comma. Make sure that’s the thing it really describes.
The 4 kinds of Form, Structure, and Sense question
Sorted from every Form, Structure, and Sense question in the site's bank: each kind keeps coming up, and has a method that works every time.
1. Subject-verb agreement
How to spot it. All four choices are the same verb in singular and plural forms, such as is and are, was and were, studies and study, or has and have. Often a long phrase separates the blank from its subject.
How to answer it:
- Find the verb’s subject by asking who or what is doing the action or being described.
- Cross out everything between the subject and the blank that isn’t the subject: of phrases, which or who clauses, descriptions set off by commas, and anything in dashes or parentheses.
- Decide whether the subject is singular or plural. A noun joined to another noun by and is plural; each, every and one are singular.
- Choose the verb that matches in number, then check that its tense fits the rest of the passage.
The trap. Matching the verb to the nearest noun instead of the real subject. The SAT loves to put a plural noun right before the blank when the subject is singular, or the other way round. Always trace back to the true subject.
2. Verb form and tense
How to spot it. The choices are one verb in different forms. Some are full verbs with a tense (kept, examines, had served, will leverage) and some are not (to keep, keeping, having kept). Either the blank has to be the clause’s main verb, or the timeline decides between past, present and past perfect.
How to answer it:
- Find the clause the blank is in, and look for its subject and its main verb. Read past the blank, because the main verb sometimes comes later.
- If the clause has no main verb yet, the blank must be a full verb with a tense. Cross out the -ing and to forms.
- If the clause already has its main verb, check for and. If and links the blank to that verb, the blank is a second main verb in the same form (she wrote the songs and recorded them). If not, the blank is an add-on, so use an -ing form or a to form and cross out the full verbs. A to form often shows purpose: she left her job to join a program.
- If more than one full verb is left, check the timeline. Dates and time words tell you: past events take past tense, an earlier past event takes had, something that started in the past and continues takes has or have, and general facts take present tense.
The trap. Choosing a verb that sounds fine on its own but gives the clause two main verbs, or leaves it with none. In long sentences the real main verb often comes after the blank, so finish reading the sentence before you decide.
3. Pronouns, plurals, and possessives
How to spot it. The choices swap pronouns (it, they, its, their, it’s, they’re, this, these) or put apostrophes in different places on the same nouns (author, authors, author’s, authors’).
How to answer it:
- For a pronoun, find the noun it stands for. For a noun, work out what it refers to in the passage.
- Decide whether that is one thing or more than one. A single thing, group or organization is it and its; several are they and their.
- Ask whether the word owns the noun that comes next. If it does, it needs a possessive form: its or their for pronouns, an apostrophe for nouns. If it doesn’t, use the plain form.
- Place the apostrophe: one owner gets ’s (photographer’s), and several owners whose plural ends in s get just ’ (towns’). It’s and they’re mean it is and they are, so pick them only if those words make sense in the sentence.
The trap. There are two classic traps. One is matching the pronoun to a nearby plural noun instead of the noun it actually stands for. The other is adding an apostrophe to a plain plural: if the photos or poems don’t own anything, they don’t get an apostrophe.
4. Modifier placement
How to spot it. The sentence opens with a describing phrase that has no subject of its own, like “Far from being modern inventions” or “Built more than a century ago”, and the blank is the rest of the sentence. The four choices say roughly the same thing in different word orders.
How to answer it:
- Read the opening phrase and ask who or what it describes. Who is doing this, or being this?
- Name that person or thing before you look at the choices.
- Choose the option whose first noun, right after the opening phrase, is that person or thing. Be wary of choices that start with it, there, the use of, or someone’s something.
- Reread the full sentence to make sure it makes sense and has no other errors.
The trap. Choosing the option that sounds smoothest. Watch out for possessives: in “Walking into the lab, the scientist’s notebook fell open”, the subject is the notebook, not the scientist, so the sentence says the notebook was walking.
Practise Form, Structure, and Sense
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