Cú mik mí bạn ơiiiiiiiiiiiiiii ;-; khỏi giải thích ghi đáp án ra là đc nhanhhh giúp tớ nheeennnn vót cho 5sao

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,.....

Công thức thì QKĐ (V: to be)

(+) S + was/were + ... 

(-) S + was/were + not ... 

(?) Was/Were + S ... ? 

S số ít, I, he, she, it + was

S số nhiều, you, we ,they + were

Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

Công thức thì HTHT

(+) S + has/have + V3/ed 

(-) S + has/have + not + V3/ed 

(?) Has/Have + S+ V3/ed?

DHNB: before, since + mốc thời gian, for + khoảng thời gian, yet, already, just,....

Công thức thì QKTD 

(+) S + was/were + Ving 

(-) S + was/were+ not + Ving 

(?) Was/Were +S +Ving? 

Công thức thì QKHT

(+) S + had + V3/ed 

(-) S + had + not + V3/ed 

(?) Had + S+ V3/ed?

-------------------------------------------------------------

1. are swimming

DHNB: Look! (HTTD)

2. was 

S + asked + O + Wh + S + V (lùi thì)

now --> then 

HTĐ --> QKĐ

3. has traveled 

DHNB: since 2020 (HTHT)

4. have you been

DHNB: for 20 years (HTHT)

5. are singing

DHNB: Listen! (HTTD)

6. met / was preparing

7. Have you ever been

DHNB: ever (HTHT)

8. is thought 

It + be + V3/ed + that + clause: bị động không ngôi

9. told / had been

S + told + O + that + S  + V (lùi thì)

DHNB: for years (HTHT)

HTHT --> QKHT

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