Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

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,.....

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1. He often has breakfast late.

2. Are you doing the housework at the moment? 

3. I don't go to school on weekends.

4. John's girlfriend is wearing a red T-shirt now.

5. Do they like beer or wine?

`color{orange}{~MiaMB~}`

1. He often has breakfast late.

- DHNB: often -> Thì HTĐ: (+) S + V(s/es)

- Lưu ý: S = He + V(s/es)

2. Are you doing the housework at the moment? 

- DHNB: at the moment -> Thì HTTD: (?) Is/Am/Are + S + V-ing?

- Lưu ý: S = Are + you

3. I don't go to school on weekends.

- DHNB: on weekends -> Thì HTĐ: (-) S + don't/doesn't + V(bare)

- Lưu ý: S = I + don't

4. John's girlfriend is now wearing a red T-shirt.

- DHNB: now -> Thì HTTD: (+) S + is/am/are + V-ing

- Vì "John's girlfriend" là S số ít -> Dùng "is"

5. Do they like beer or wine?

- Diễn tả sở thích -> Thì HTĐ: (?) Do/Does + S + V(bare)?

- Lưu ý: Do + they