Question

Use the correct form of the infinitive to complete the sentence:
She sees him ___ by her office.
A) walk
B) walks
C) to walk
D) walked

Answer 1

Hint: A verb is a word that expresses an action, an event, or a state of being through syntax. The infinitive, with or without the particle to, is the basic form in the standard English description. Tense, aspect, mood, and voice are all encoded through inflecting verbs in various languages.

Complete answer:
The term "infinitive" refers to a set of verb forms found in various languages that are most commonly used as non-finite verbs. There is no singular definition that applies to all languages, as there is for many linguistic notions.

Let us first grasp the meaning and usage of 'see' in the active and passive voice in order to fill in the blank with the correct form of the infinitive. Viewing, watching, or witnessing someone or something is what 'see' denotes. The infinitive/verb will be used in its original form (bare infinitive) in a phrase in the active voice. The verb in its original form is always used with the marker 'to' in the passive voice.

We shall use the infinitive without the marker 'to' because the sentence is in the active voice.
Despite the fact that the sentence contains the word 'sees,' which indicates that it is in the present tense, we will employ the verb in its original form.

Now, let us look at the given options:
A) walk: This is the correct option. In its original form, 'walk' is a verb that can be employed with or without the marker 'to.' It is the best fit for the above sentence.
B) walks: This option is incorrect because the third person form of the verb 'walk' is 'walks.' We can't use 'walks' since we require the verb in its original form.
C) to walk: This option is incorrect because the verb is in its original form with the marker 'to,' 'to walk' cannot be used here. This phrase can only be used in passive voice sentences.
D) walked: This option is incorrect because the past tense of the word 'walk' is 'walked.' We can't use 'walked' since we require the verb in its original form.

Thus, the correct answer is Option (A) walk.

Note: Some rules of verbs are:
- If the subject is singular, then the verb must also be singular.
- The verb must be plural if the subject is plural.
- Use a plural verb when the sentence's topic is made up of two or more nouns or pronouns joined by and.