Subject Verb Agreement

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	Subject (noun)	Verb (action)
Singular	he / she / it	learns
Plural	they	learn

Base Form of Verb: learn , walk , like , have (irregular), do

Simple Present Singular
First Person:	I	like	have	do
Second Person	you	like	have	do
Third Person	he / she / it	likes	has	does

Simple Present Plural

First Person	we	like	have	do
Second Person	you	like	have	do
Third Person	they	like	have	do

In general, when the subject is singular, use the -s form of the verb.

He walks
She sleeps
It jumps

In general, when the subject is plural, use the base form of the verb.

They walk
They sleep
They jump

Attention:
Watch out for irregular forms, for which the -s rule does not apply.

He studies
She has
It does
He catches
It flies

Also See:

Tense Agreement
Verb Tenses Chart ↑▲▲▲▲▲▲▲↑