Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

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

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EX1:

1. John is watching TV.

2. His mother is cooking.

3. His father is reading a newspaper.

4. His sister and brother are playing chess.

5. His dog is lying on the floor

EX2:

1. Are you wearing white socks?

2. Are you learning English?

3. Is our teacher smiling?

4. Are we sitting next to the door?

5. Is our teacher writing on the board?

6. Is your father working in a factory now? 

7. Is your mother cooking now?

`color{orange}{~MiaMB~}`

 Doing at the moment (present continuous)

S+am/is/are+V-ing+object

S+am/is/are+not+V-ing+object

Am/Is/Are+S+V-ing+object?

.............

I/

1) John is watching TV.

2) His mother is cooking. 

3) His father is reading a newspaper.

4) His sister and brother are playing chess.

5) His dog is lying on the floor.

II/ 

1) Are you wearing white socks?

2) Are you learning English?

3) Is our teacher smiling?

4) Are we sitting next to the door?

5) Is our teacher writing on the board?

6) Is your father working in a factory now?

7) Is your mother cooking now?
.........................................................

Chúc bạn học tốt <3

@JulianeEvans5201314