Verbs are 'doing' words. For example, run, walk swim, talk, choose, and sing are all verbs. When we use the words HE, SHE, IT or a person's name, we must add 's' to the verb.

We do not add 's' when we use the words 'I', 'YOU', 'WE', 'THEY' and 'BOTH' .

Examples:

He swims at the pool 4 days a week. I swim at the pool 4 days a week.

She talks to her mother everyday. They talk to their mother everyday on the phone.

Daphne likes to cook. Daphne and her friends like to cook together.

He plays the guitar.They both play an instrument.

She sits in the classroom and waits for the teacher. They sit in the classroom and wait for the teacher.