$*$ Thì HTĐ với động từ thường :

$(+)$ S + Ves/s

$(-)$ S + don't/doesn't + V-bare

$(?)$ Do/Does + S + V-bare ?

$*$ Thì HTĐ dạng tobe : 

$(+)$ S + am/is/are + N/adj

$(-)$ S + am/is/are + not + N/adj

$(?)$ Am/is/Are + S + N/adj ?

$*$ Thì HTTD :

$(+)$ S + am/is/are + Ving

$(-)$ S + am/is/are + not + Ving

$(?)$ Am/Is/Are + S + Ving ?

$*$ Thì QKĐ với động từ thường :

$(+)$ S + Ved/V2

$(-)$ S + didn't + V-bare

$(?)$ Did + S + V-bare ?

$*$ Thì QKĐ với động từ tobe :

$(+)$ S + was/were + ...

$(-)$ S + was/were + (not) + ...

$(?)$ Was/Were + S + ... ?

( Mình trình bày dưới hình )

1. My mother (buy) ………………………me a dictionary last week .

-> bought

Last week là dấu hiệu thì QKĐ:

(+) S + V(ed/P2)

(-) S + didn't + V

(?) Did + S + V+...?

2. Nam often (play)………computer games in his free time. He (not like)………. sports.

-> plays/ does not like

Dùng thì HTĐ vì có dấu hiệu '' often ''

(+) She/He/It + V(s/es)

You/We/They + V

(-) She/He/It + doesn't + V

You/We/They + do not + V

(?) Do/Does + S + V?

3. Why (not/ you/ go) ……..........……………….to school yesterday,Hoa?

-> didn't you go 

Yesterday thì QKĐ

4. I remember that I (be) ……….. 40 kilos last year, but this year I (be)…… 45 kilos.

-> was/ am

5. The students……………………(not take) a rest now.

-> aren't taking

Now: Thì HTTD

(-) S + is/am/are + V-ing

(+) S + is/am/are + not + V-ing

(?) Is/am/are + S + V-ing?

6. We……………………..(finish) our homework two days ago.
-> finished

Ago: QKĐ

7. She needs…………………(brush) her teeth every morning.

-> to brush

Need + to V: nhấn mạnh ai cần phải làm 

8. Today, the weather is not good. It ________ (be) very hot now.

-> is

9. Be careful! The children (cross) ____________________ the street.

-> are crossing 

Dấu hiệu nhận bt thì HTTD: !

10. Hoa usually (wash) ____________________ and irons her own clothes.

-> washes

11. The Robinsons (go) _________________ to Nha Trang last vacation.

-> went

12. Wait! I _________ (drive) you to the station.

-> am driving

13. I can ………....… (not take) a rest now. I have to …….. (work) hard.

-> can not take/ work

14. (you/meet) ………………. your friends at the airport tomorrow?

->  Will you met

15. We usually (wash) ………………………… and irons our own clothes.

->wash

16. (they/ wait) …………………….. for their parents now ?

-> Are they waitting

17. She wants ………… (fill) the cavity in her tooth.

-> to fill

18. What ………….. (you/ look) for? - I ……….. (look) for my keys lost.

-> are you looking/ am looking

19. My mom ………… (be) born in 1980.

-> was 

20. We have a three-month this summer vacation. We …… (visit) Tri Nguyen Aquarium

-> visited