This collection of work sheets will teach your students how to identify infinitives in a sentence.

Infinitives are uninflected verbs paired with the word "to," as in "to run," "to boost," or "to go." Infinitives can function as a noun, an adjective, or an adverb. It is important to note that, although they are formed from verbs, infinitives cannot be pluralized like its non-infinitive verb can (adding s or es). Students will use the following activity sheets to learn how to recognize, construct, and use infinitives. Answer sheets have been provided.

Fun Fact: The "rule" about not splitting infinitives grew out of a desire to make English more like Latin, but English is more flexible, so it can be done within reason.

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Print Infinitive Worksheets

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Noun, Adjective, or Adverb?

Underline the infinitive in each sentence. On the line, write whether it is being used as a noun, an adjective, or an adverb.

Identifying Them

Underline the infinitive in each sentence. If there is no infinitive in the sentence, write none on the line.

Location Pointer

Circle the infinitive in each sentence.

Phrases

An infinitive phrase is an infinitive with modifiers or a compliment, all acting together as a single part of speech.

"to" Plus a Verb

Can you locate that little guy?

Form That Piece

Complete each sentence with the infinitive form of the verb provided.

X Marks It!

Read each sentence. Does it contain an infinitive? If yes, underline the infinitive. If no, put an X through the number of the sentence.

Include Me

Rewrite each set of sentences below so that they are a single sentence that includes an infinitive.

Find the Infinitive

Underline the infinitive in each sentence.

Single Sentence

Rewrite each set of sentences below so that they are a single sentence that includes an infinitive.

Example of Use

To fail is part of success. (Infinitive used as a noun.) The book to review is your favorite. (Infinitive used as an adjective.) This dog will be simple to train. (Infinitive used as an adverb.)

Filler Up

What word or phrase would finish that sentence off?

Correcting Split Infinitives

Rewrite each sentence to correct the split infinitive.

Correcting Splits

Make the splitsville run in the correct manner.

Sneaker Around

Look all over and find the infinitive in each sentence. Write it on the line.