MTEL Communication Literacy Skills : Writing Practice Test

What is the definition of an infinitive?

1. A verb form that is changed based on the subject

2. The basic form of a verb, usually preceded by "to"

3. A version of a verb that conveys the past tense

4. A compound structure that includes a noun and a verb

The correct answer is: The basic form of a verb, usually preceded by "to"

The definition of an infinitive accurately describes it as the basic form of a verb, typically preceded by "to." Infinitives can function as nouns, adjectives, or adverbs within a sentence, making them versatile components of English grammar. For instance, in the sentence "I want to run," "to run" is the infinitive that acts as the object of the verb "want." This highlights its fundamental role in expressing actions without being limited by tense or subject agreement, differentiating it from other verb forms that change based on those factors.