`1.` Did he do/ Did

`->` Last night là DHNB của QKĐ 

`->` QKĐ : Did + S + V ? | S + Ved

`2.` Didn't use

`->` Yesterday là DHNB của QKĐ  

`->` QKĐ : S + didn't + V

`3.` Lives

`->` Sự thật `=>` HTĐ : S + V(s/es) + O

`->` He/she/it `+` Vs/es

`4.` Read

`->` Last month là DHNB của QKĐ

`->` QKĐ : S + Ved + O

`5.` Did she forget

`->` QKĐ : Did + S + V ? 

1. did he do - did

2. didn't use

3. lives

4. read

5. Does she forget

Thì hiện tại đơn:

- Động từ thường

(+) S + V (es,s) + O

(-) S + doesn't / don't + V + O

(?) Do / Does + S + V + O

- Tobe:

(+) She / He / It + is

They / We / You + are

I + am

(-) She / He / It + isn't

They / We / You + aren't

I + am not

(?) She / He / It + Is

They / We / You + Are

I + Am

- Dấu hiệu: Always ; Usually ; Never;....

Thì QKĐ :

- Động từ thường :

(+) S + Ved/V2 + O

(- ) S + didn't + Vinf + O

(? ) Did + S + Vinf + O ?

- Tobe :

(+) S + was/were + O

(- ) S + was/were + not + O

(? ) Was/were + S + O ?