I work /study/ eat (present simple)

I work.

You work.

They work.

We work.

He works.

She works.

It works.

NEGATIVE:

I don’t work.

You don’t work.

They don’t work.

We don’t work.

She doesn’t work.

He doesn’t work.

It doesn’t work.

QUESTION:

Do I study?

Do you study?

Do we study?

Do they study?

Does she work?

Does he work?

Does it work?

USES:

We use the present simple when something is generally or always true. 

For example: 

People need water.

It rains a lot here in July.

Two and two make four.

We can also use this tense for a situation that we think is more or less permanent. 

For example: 

Where does she live?

My father works in a school.

She doesn’t like mushrooms.

We can also use this tense for habits or things that we do regularly.

For example: 

Does she exercise?

I watch a movie every Sunday.

She doesn’t go out very often.