Công thức thì HTĐ (V: tobe)

(+) S + am/is/are ..

(-) S + am/is/are + not .. 

(?) Am/Is/Are + S + ... ? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

DHNB: now, right now, (!), at present, at the moment,.....

---------------------------------------------------------------

1. I am not a teacher.

2. She is my mother.

3. The boys are playing chess.

4. My new student is in the room.

5. We are not at home.

6. The teacher is angry.

7. Our sons are smart.

8. The dog is in the kennel.

9. His books are on the table.

10. The broom is behind the door.

`color{orange}{~MiaMB~}`