giúp em chia thì từ câu 45 đến câu 50 ạ

45. Thì HTHT ( This is the first time + S + have/ has + V3/ed)

⇒ This is the first time she has eaten this food.

46. Thì HTHT ( S+ had + V3/ed)

⇒ We had met him several times. 

47. Thì QKD ( S + V2/ed) (at this time last year)

⇒ At this time last year she lived in Canada. 

48. Thì HTHT (S + had + V3/ed + ... + for/since ...)

⇒ By the end of last March, I had studied English for 5 years. 

49. Thì QKD ( S + V2/ed) 

⇒ What did you do after you went home yesterday? 

50. Thì HTHT (S + have/has + V3/ed) (recently)

⇒ Recently, I've not seen her.

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 QKHT

(+) S + had + V3/ed 

(-) S + had + not + V3/ed 

(?) Had + S+ V3/ed?

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 QKTD 

(+) S + was/were + Ving 

(-) S + was/were+ not + Ving 

(?) Was/Were +S +Ving? 

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45. has eaten 

This / It is the first time + S + has/have + V3/ed 

46. have met 

DHNB: several times (HTHT)

47. was living

DHNB: at this time last year (QKTD)

48. had studied

DHNB: by the end of last March, for 5 years (QKHT)

49. did / do / had gone 

QKD + after + QKHT

50. haven't seen

DHNB: recently (HTHT)

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