The present continuous is a verb tense used to show actions
happening in the present. These actions are happening right
now.

STRUCTURE

Subject + Verb “to be” + Verb + ing (gerund)

I am talking.
She is not singing.
They are watching a movie.

USES

Present continuous is used for actions that are happening
right now.

I am eating dinner now.
He is listening to music.

Now can mean many things. It may mean right now or this
second. It can also mean these days or this year.

I am listening to music right now.

(This describes the action happening right now)

I am working at Burger King.

     (The person is not working this minute, but in general)

The second example shows how simple present and present
continuous can be used in the same way.

How are you?                                   How are you doing?
I live in Toronto.                               I am living in Toronto.
I teach at Chester High School.     I am teaching at Chester.

QUESTIONS

The verb and the subject are reversed to form a question with
the present continuous.

Yes/No Questions
Is he eating dinner?                       Yes he is eating dinner.
Are you watching a movie?          No. I am playing piano

WH Questions
Where is he going?
What are you doing?
Why is she singing?

Practice the present continuous with these tests:

Present Continuous Test

Present Continuous Test 2