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The base form of a verb is a verb without

any endings added.

The base form of a verb allows the beginning language learner
to form basic sentences with a subject and a verb. As Part Two
will explain in detail, it is used to express an action that
happens in the present moment.

Principal Part , the base form of a verb, connects to a subject.
The following chart illustrates how verb forms change when
they are combined with matching subject pronouns.

Subject as Pronoun

Connecting

Verb Sentence

We

You you

I

I swim I swim.

You swim.

He swims.

She swims.

It swims.

We swim.

You swim.

They swim.

swim

swim

swim

swim

swims

You you

they

we

he

she

it

1

3

2

1

3

2

1