The verb base
المؤلف:
EVELYNP.ALTENBERG & ROBERTM.VAGO
المصدر:
English Grammar Understanding the basics
الجزء والصفحة:
P25-C2
2025-11-01
25
The verb base
Sometimes a verb changes its form. Let’s look at the following sentences. The verb is underlined in each one.
1. John should study.
2. John studied.
3. John is studying.
4. John studies.
You certainly can’t say, *John should studied, or John to studied, so how do we know that studied is a verb? To test the word, you have to see if it can follow should or to in a different form, not necessarily in the form that you see in a particular sentence. For example, if you see John studied, ask yourself if there’s a different form of studied that can follow should or to. In this case there is: John should study or John decided to study. So, study and all its forms are verbs. The form of the verb that follows should or to is called the base form or infinitive form. The term infinitive is used to refer either to the base form alone (for example, study), or to the to+ base form (for example, to study).
Let’s put each of these verbs into its base form. The base form is underlined.
5.working:(should, to) work
6. believed:(should, to) believe
7.written:(should, to) write
8.wore:(should, to) wear
9. throws:(should, to) throw
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