What Are Infinitive Verbs?

Infinitive verbs are the basic form of a verb, often preceded by the word "to." They remain unchanged regardless of the subject or tense and can function as nouns, adjectives, or adverbs in sentences.

Understanding Infinitive Verbs?

Infinitive verbs are the base form of a verb, typically preceded by the word "to." They do not change according to the subject or tense. Infinitives can function as nouns, adjectives, or adverbs in sentences.

Examples of Infinitives:

  • to eat

  • to sleep

  • to read

Types of Infinitives

Infinitives can be divided into two main types: full infinitives and bare infinitives.

Full Infinitives: These include the word "to" before the verb.

  • Examples: to run, to write, to sing

Bare Infinitives: These are used without "to" and often follow modal verbs, certain auxiliary verbs, or verbs like "let" and "make."

  • Examples: run, write, sing

Functions of Infinitives in Sentences

Infinitives can serve various roles in a sentence, enhancing your ability to communicate effectively.

As Nouns: Infinitives can act as the subject or object of a sentence.

  • Example: To learn is important.

  • Example: He wants to succeed.

As Adjectives: Infinitives can describe nouns.

  • Example: She has a book to read.

  • Example: There is a lot to consider.

As Adverbs: Infinitives can modify verbs, adjectives, or other adverbs.

  • Example: He went to the store to buy groceries.

  • Example: She works hard to achieve her goals.

Common Verbs Followed by Infinitives

Certain verbs are typically followed by infinitives, making sentence construction more accurate.

Examples:

  • decide

  • want

  • need

  • hope

  • plan

  • promise

Example Sentences:

  • She decided to start a new project.

  • They hope to visit next summer.

Infinitive vs. Gerund

Understanding the difference between infinitives and gerunds is essential. Gerunds are the -ing form of verbs used as nouns.

  • Infinitive Example: I like to read.

  • Gerund Example: I like reading.

Both forms can sometimes be used interchangeably, but their usage can alter the sentence's nuance.

Common Mistakes with Infinitives

Learners often make mistakes when using infinitives. Here are some common errors and how to avoid them:

Using "to" with Bare Infinitives: Remember that bare infinitives do not use "to."

  • Incorrect: He can to swim.

  • Correct: He can swim.

Splitting Infinitives: Avoid placing words between "to" and the verb.

  • Incorrect: She decided to quickly finish her work.

  • Correct: She decided to finish her work quickly.

Incorrect Verb Forms: Ensure you use the base form of the verb after "to."

  • Incorrect: He wants to playing.

  • Correct: He wants to play.

Practice Exercises

To solidify your understanding of infinitive verbs, try these practice exercises:

Exercise 1: Identify the Infinitive Identify the infinitive in each sentence:

  1. She wants to learn Spanish.

  2. They decided to go for a walk.

  3. He needs to finish his homework.

Exercise 2: Correct the Mistakes Correct the errors in the following sentences:

  1. She wants to quickly improve her English.

  2. He needs to to study more.

  3. They decided to visiting the museum.

Exercise 3: Fill in the Blanks Fill in the blanks with the appropriate infinitive:

  1. She hopes ____ (to travel) next year.

  2. He promised ____ (to call) me later.

  3. They need ____ (to work) harder.