Now let’s go a little deeper into how this question type works. Take a careful look at the image below:

As you can see, these questions include a prompt sentence (the red box), an incomplete sentence with several blanks (the green box), and a number of mixed words or phrases (the purple box). Your task is to place each word into the correct blank to complete the sentence properly.

Both the prompt sentence and the sentence you need to build can be either statements or questions. In the example above, both sentences were statements. In the example below, the prompt sentence is a question while the sentence you need to build is a statement.

RT 1

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Writing | Question 1 of 1

Make an appropriate sentence.

Why did the client call this morning?

{They} {want} {an update} {on} {when} {we} {expect} {the project} {to finish}.

Analysis

Answer

Why did the client call this morning?

{They} {want} {an update} {on} {when} {we} {expect} {the project} {to finish}.

Sample

AI

And in the next example, the prompt sentence is a statement while the sentence you need to build is a question.

Paying attention to the type of sentence is extremely important if you want to build the correct answer and collect all those tasty TOEFL points.

In some cases, the number of word chunks provided is exactly the same as the number of blanks. In that situation, your only job is to arrange them in the correct order. For example, in the following question, there are seven blanks and exactly seven word chunks to complete the sentence.

However, in the more common version of these questions, the number of word chunks is more than the number of blanks. In these cases, besides finding the correct word order, you also need to figure out which word or phrase is extra and should not be used. In TOEFL questions, these extra choices are usually not random little forest distractions — they are carefully designed to challenge you and can easily lead your squirrel brain to the wrong answer if you are not careful.

In this task, you may see anywhere from 9 to 12 questions, and you usually have about 6 to 8 minutes to complete them. That means you should spend around 45 seconds on each question on average. So if you want to avoid wasting precious test time, having the right strategy is extremely important.

In English, sentences are built from phrases, not individual words. That means you should not try to build sentences one word at a time like a squirrel dropping random nuts into a pile. Instead, you should think in terms of phrases and sentence structures.

Once you become familiar with these structures and fixed phrases, you will start recognizing them immediately whenever you see the words. Rather than thinking about each word separately and placing them into the blanks one by one, you will be able to move entire structures together as one unit. This saves time and greatly reduces errors.

We call these structures the skeleton of the sentence. Once the sentence skeleton is in place, adding the remaining parts becomes much easier.

Types of Phrases

• Noun Phrases
• Verb Phrases
• Prepositional Phrases

When facing these questions, your first step should be to identify these phrases among the given words. Then, you should place the phrases into the sentence in the correct order.

Noun Phrases

In noun phrases, there is one simple rule: a noun phrase is built around a noun, and every other word in the phrase exists only to make that noun more complete or more specific.

The typical structure of a noun phrase is:

#green Determiner #green + #orange adjective #orange + #red noun #red

For example:

• #green the #green #red book #red
• #green a #green #orange new #orange #red chair #red
• #green many #green #orange international #orange #red teachers #red

You cannot change this structure. For example, you cannot say new a chair or students many international. So whenever these words appear together, they travel together like a tidy little squirrel family and always keep the same order.

If a number is included, the structure usually becomes:

#green Determiner #green + #purple number #purple + #orange adjective #orange + #red noun #red

For example:

• #green the #green #purple two #purple #red students #red
• #purple five #purple #orange international #orange #red teachers #red

Determiners are words that come before nouns and help define reference, quantity, ownership, or how specific the noun is. In general, determiners fall into several main categories:

• Articles such as a / an and the, which show whether a noun is specific or non-specific (a problem vs. the problem)
• Possessives such as my, your, and their, which show ownership (my project)
• Demonstratives such as this, that, these, and those, which point to specific people or things (these examples)
• Quantifiers such as some, many, much, and several, which show quantity or amount (many students, some information)

In all of these cases, the determiner always comes before the noun and helps the reader understand exactly which noun is being discussed.

Degree adverbs can also appear inside noun phrases. These adverbs express the intensity or degree of adjectives, so they must come before the adjective within the noun phrase.

For example:

• a very important class
• an extremely difficult subject
• a highly effective solution

Question: If several adjectives describe the same noun, what order should they follow?

Answer: In English, adjectives follow specific ordering rules. But for TOEFL questions, learning this simple pattern is usually enough to help you solve most Build a Sentence tasks. Arrange adjectives in this order: opinion + type + noun

Opinion adjectives express the speaker’s opinion, judgment, or attitude toward something. In other words, they show what you think about the noun.
Examples: valuable, beneficial, debatable, practical

Type adjectives describe the category, field, or nature of something. They explain what area or type the noun belongs to.
Examples: scientific, cultural, economic, technological

Correct Examples:

• a useful academic resource
• an effective educational policy
• a controversial scientific theory
• a practical technological solution

Incorrect Examples:

• an academic useful resource
• an educational effective policy
• a scientific controversial theory
• a technological practical solution

Now it's your turn! Let's practice!

Build a noun phrase from the scrambled words below:

research / extremely / the / three / complex / completed / researchers / have

Correct noun phrase:

the three extremely complex research projects

Could you get it correctly? Let's try another one!

policy / new / the / government / three / highly / effective / announced / has

Correct noun phrase:

the three highly effective new policies

Verb Phrases

A verb phrase shows what happens or what action is performed in a sentence. In fact, the core meaning of the sentence usually lives inside the verb phrase, and without it, the sentence feels incomplete, like a squirrel trying to run without its tiny paws! 🐾

A verb phrase generally follows this structure:

Auxiliary Verb + Main Verb + (Object / Complement)

In some sentences, there may be no auxiliary verb, but the main verb is always there.

Examples:

• will influence academic results
• has increased student motivation
• can improve writing accuracy

In each of these examples, several words work together to form one verb unit, and they should not be separated.

Rules of Verb Phrases

Rule 1: Auxiliary verbs always come before the main verb

Common auxiliary verbs include:

be, am, is, are, was, were, being, been
have, has, had
do, does, did
will, would, can, could, may, might, should, must, shall

Examples:

• will increase
• has improved
• is affecting

Rule 2: Degree adverbs and frequency adverbs usually come between the auxiliary verb and the main verb

Common TOEFL adverbs of this type include:

significantly, substantially, frequently, often, already

Examples:

• Students have often complained about deadlines
• The results are significantly affected by stress

Rule 3: The object always comes after the main verb

The object is the part of the sentence that directly receives the action of the verb. It tells us “what” or “who” is affected by the action, which is why its natural position is after the main verb.

Examples:

• require data
• affect people

Rule 4: There is only one main verb in a verb phrase

A verb phrase may contain one or more auxiliary verbs, but it always has only one main verb.

Correct Examples

(the main verb is in bold)

• will consider
• has been developing
• should have thought

Incorrect Examples:

• will affect improve
• has improved increase

Rule 5: Modal verbs are strong signals for the start of a verb phrase

If you notice a modal verb among the given words, your job becomes much easier because you can quickly build a verb phrase around it , just like spotting a trail of hazelnuts in the forest. 🌰

Semi-modal verbs

Semi-modal verbs are similar to modal verbs in meaning, but they usually appear as multi-word structures and are followed by to + base verb, such as:

• have to complete
• be able to adapt

Unlike regular modal verbs such as can or should, semi-modals can change form depending on the tense or subject. For example:

• have to
• has to
• had to

In TOEFL Build a Sentence tasks, these structures are important because ETS treats them as one complete verb phrase. For this reason, their parts should never be separated and should always stay together. If you can recognize these combinations quickly, building the verb phrase — and the entire sentence — becomes much easier.

Common Semi-Modal Structures in TOEFL Questions

Now let’s gather all the acorns we’ve collected so far and review everything together. In the scrambled words below, first identify the noun phrases (NP) and verb phrases (VP), then use them to build the sentence.

Prepositional Phrases (PP)

A prepositional phrase adds extra information to a sentence, such as place, time, purpose, or context, but it does not create the main structure of the sentence itself. In simple terms, a PP makes the sentence more detailed and complete rather than forming its core meaning.

The basic structure of a prepositional phrase is:

Preposition + noun or noun phrase (NP)

Examples:

• for students
• in higher education
• at the end of the semester

Here’s an important little TOEFL acorn to remember: prepositional phrases usually come after the main sentence structure. In Build a Sentence tasks, you should recognize them as supporting elements. In other words, first build the noun phrases and verb phrases, and then attach the PP afterward.

Common Types of Prepositions

Now let’s build the following sentences using this strategy.

Trap 1: WH-Questions with Auxiliary Verbs vs. WH-Words Acting as the Subject

These two question types are one of the biggest squirrel traps in TOEFL Build a Sentence tasks. 🐿️ Being able to tell the difference between them is extremely important.

WH-Questions with Auxiliary Verbs

In this type of question, the auxiliary verb must come before the subject after the WH-word.

Pattern:

WH + auxiliary + subject + base verb … ?

Correct Example:

Why did the meeting end early?

Incorrect Example:

Why the meeting ended early?

When the WH-Word Itself Is the Subject

If the WH-word itself functions as the subject of the sentence, you no longer need an auxiliary verb. The main verb comes directly after the WH-phrase. Adding an auxiliary verb in this case is incorrect.

Pattern:

WH + noun + main verb … ?

Correct Example:

Which factor influences student motivation?

Incorrect Example:

Which factor does influence student motivation? ❌
(does should not be used here.)

Question: How can I tell the difference?

Answer: In TOEFL Build a Sentence tasks, whenever you see a WH-question, the very first thing you should check is whether the WH-word itself is acting as the subject. ETS absolutely loves using this tiny grammar acorn to confuse test takers.

If there is a separate subject among the given words together with the WH-word, then the WH-word is not the subject. In that case, you must use an auxiliary verb before the subject.

For example, if the words are:

why / did / students / choose / this method

the presence of students shows that the WH-word is not the subject, so the correct structure must include did.

However, if there is no separate subject after the WH-word, and the WH-word is attached directly to a noun phrase such as which factor or what change, then that phrase itself functions as the subject. In this situation, you should not look for an auxiliary verb, and the sentence should be built directly with the main verb.

ETS often includes an extra auxiliary verb on purpose to trick you, but in this type of question, that auxiliary should not be used at all. Sneaky little trap, huh? 🌰

Trap 2: Indirect / Embedded Questions

In indirect questions, the sentence follows statement word order, not direct-question structure.

In indirect questions, the structure works a little differently from direct questions. First, there is a main clause, and then an additional clause introduced by words such as if or whether.

The general pattern is:

Main clause + if / whether + subject + verb

The important point is that after if or whether, you should no longer invert the subject and verb the way you do in direct questions. The word order must stay in normal statement form.

Examples:

• Do you know if she will be moving?
• Can you tell me whether the cabins will be available?

In both sentences, the part after if or whether follows normal statement order: subject + verb.

The incorrect form would be:

whether will the cabins be available

How Can You Recognize Them?

Rule:

If words such as if, whether, what, where, when, why, or how appear after verbs like know, ask, wonder, tell, or explain, the clause that follows uses statement word order, not question inversion.

1. Before arranging the words, carefully read the prompt or situation

As we mentioned earlier, every Build a Sentence question is presented as part of a short conversation or situation.

If the given sentence is a question, you will usually need to build a statement in response.

If the sentence is a statement, your answer may take the form of confirmation, explanation, or completion of the idea.

So before doing anything else, pause for one tiny squirrel second and decide this:

Am I supposed to build a question or a statement?

This simple decision determines whether you need inversion or not.

2. Be careful with inversion traps

This is one of the most common reasons test takers lose points.

In direct questions, the subject and auxiliary verb switch places:

What time does it start?

But in indirect questions, the sentence keeps normal statement order:

Do you know what time it starts?

Practice this pattern carefully until recognizing it becomes automatic, like a squirrel spotting hidden hazelnuts from far away. 🐾

3. First look for structures (the sentence skeleton)

As explained earlier, identifying phrase structures and placing them into the sentence as complete units, instead of choosing words one by one, saves time and greatly reduces mistakes.

4. Use grammar rules to eliminate extra options

When there are more word chunks than blanks, the extra words are usually placed there intentionally to confuse you.

Here are a few simple ways to eliminate incorrect choices:

• Subject–Verb Agreement

If the subject is plural, eliminate singular verbs.

• Remove unnecessary repetition in relative clauses

In sentences with words such as who, which, that, or where, these words already function as the subject or object of the relative clause. Because of that, you usually do not need an additional pronoun like it, them, he, or she.

• Watch for incorrect collocations

In English, some words naturally travel together and form common combinations called collocations. If you know these combinations, you can quickly spot unnatural choices and toss them aside like empty walnut shells.

5. Do a quick final check before submitting

Before submitting each answer, quickly ask yourself:

• Does the verb match the subject?
• Is the word order correct for a statement or question?
• Is any necessary part missing?

Do not become overly perfectionistic. If the sentence is grammatically correct and logically clear, submit it and move on before the TOEFL timer scampers away with your precious minutes! 🐿️

That’s All, Folks!

Now you know everything you need to go through Toefl Writing Task 1!

Make sure to practice all the tips and don’t forget to ask if you have any further questions!