(+) Câu khẳng định

1. My father is working.

2. He is watching TV.

3. I am playing badminton.

4. I am helping my mom.

5. She is listening to music.

(-) Câu phủ định

1. I am not learning English.

2. She isn't taking some photos

3. He isn't carving wood.

4. I am not helping my mom.

5. My mother isn't teaching.

(?) Câu nghi vấn

1. Do you know how to sing like Beyonce?

- I do not know.

2. Are you buying a gift?

- Yes, it is.

3. Why are you studying English?

- For work.

4. Are you a student?

- Yes, It is.

5. Are you married?

- Yes, I’ve been married.

Ht td:công thức

Khẳng định:

S+tobe+V_ing+O

I am reading comics

We are playing chess

She is singing the song

He is walking in the park

The dog is running 

Phủ định:

S+tobe not +V_ing+O

I am not studying English

She isn't watching TV

He isn't playing volleyball

Nghi vấn

tobe+S+V_ing+O+?

Are you reading comics? Yes, i am

Is she walking in the park ? No, she isn't

Is the cat sleeping? Yes, it is

Are they playing chess? No, he isn't

Is he playing soccer in the stadium? Yes, he is