3 basic forms of verbs
These three forms are the present tense, the past tense,
and the past participle. They are called the principal parts
of the verb because the 6 tenses of
the verb can be built from them.
Verbs are divided into 2 classes on the basis of way in which the
past tense and the past participle are formed. Some are called regular
or weak verbs, and others are called irregular or strong
verbs.
A regular verb is a verb that forms the past tense and the
past participle by adding ed or d to the forme of
the present tense. Sometimes the ed or d changes to
t: build - built - built
| Verb |
Past tense |
Past Participle |
| call |
called |
called |
| bake |
baked |
baked |
| build |
built |
built |
An irregular verb is a verb that does not the past tense
and the past participle by adding ed or d to the forme
of the present tense. The past tense and the past participle of
irregular verbs are formed in various
ways.