3.1 Structure and Written Expression Overview

What Section 2 Measures

The Structure and Written Expression section is Section 2 of the TOEFL ITP and the most coachable part of the whole test. On Level 1 it is 40 questions in 25 minutes; on Level 2 it is 25 questions in 17 minutes. Unlike Listening (which tests how well you process speech in real time) or Reading (which tests comprehension of unfamiliar passages), Section 2 tests a fixed, learnable set of grammar rules. Because the same structures recur item after item, this section produces the fastest score gains for most learners — and it is the focus of this chapter and the next.

ETS measures one thing here: your ability to recognize standard written English. "Standard written English" means the formal grammar of academic textbooks, not casual speech. A sentence that sounds normal in conversation can still be marked wrong, and a sentence that sounds stiff can still be correct. The error in any item is always grammatical, never stylistic — never about whether a sentence is elegant, friendly, or natural-sounding.

The Two Item Types

Section 2 contains two different question formats, and you must switch your mindset between them.

The first part, Structure (also called sentence completion), is roughly the first 15 items on Level 1. You read one incomplete sentence with a blank and four phrase options labeled A-D. Your job is to choose the option that makes the sentence complete and grammatically correct. You are building a sentence.

The second part, Written Expression (also called error identification), is roughly the last 25 items on Level 1. You read a full sentence with four underlined parts labeled A-D. Exactly one underlined part contains a grammatical error; the other three are correct. You choose the letter of the wrong part. You are spotting an error, not fixing it.

Level 2 follows the same two formats but with fewer, easier items. The skills you build here apply to both levels.

The Core Rule: One Subject, One Finite Verb

Nearly every Section 2 item turns on one principle: every grammatical clause needs exactly one subject and one finite verb. A subject is who or what the clause is about; a finite verb is a verb that shows tense, such as is, was, develops, or had finished. Words that look verb-like but carry no tense — the -ing form (developing), the -ed/-en participle (developed, written), and the to-infinitive (to develop) — are not finite and cannot stand as a clause's main verb on their own.

Most wrong options break this rule in a predictable way. An option may give you a participle phrase that leaves the sentence with no real verb, producing a fragment. Another may add a second subject to a clause that already has one. A third may join two complete clauses with no connector, producing a run-on. When you test each option, count subjects and finite verbs per clause; the correct answer always leaves exactly one of each.

Worked Example: Consider the stem "________ the printing press, scholars copied books slowly by hand." The main clause scholars copied books slowly by hand already has its subject (scholars) and finite verb (copied). So the blank needs only a connector or preposition to introduce the noun phrase the printing press — for example, "Before the invention of." An option like "It was before the invention of" would add a second subject (it) and a second finite verb (was), creating two clauses with no link between them. Counting subjects and verbs instantly rules it out.

Strategy: Read the Stem First

The single biggest time-saver is to read the sentence before the options. Beginners read the four choices first, get confused by similar wording, and waste seconds. Instead, read the sentence, mark the existing subject and verb in your mind, and ask: what is missing or what could break?

For a Structure item, decide the grammatical role of the blank. If the main clause is already complete and the blank sits at the front, the blank usually needs an introductory modifier or subordinate clause. If there is no finite verb anywhere, the blank must supply the main verb. If two clauses appear with no link, the blank must supply one connector.

For a Written Expression item, scan the underlined parts in a fixed order so you never miss a category. The recommended order appears below.

1. Verbs first — subject-verb agreement and tense cause the most errors.
2. Word form — is a noun used where an adjective or adverb is needed?
3. Parallelism — check anything joined by and, or, or correlatives such as both...and.
4. Pronouns — number agreement and clear reference.
5. Articles and prepositions — the smallest underlined words, checked last.

This chapter teaches the grammar behind steps 1-5 (agreement, verbs, nouns/articles, pronouns); the next chapter covers clauses, modifiers, parallelism, comparatives, and style. Because there is no guessing penalty, you should also pace yourself to answer every item — mark a best guess on anything that stalls you and move on.