Câu hỏi :

I last saw Bob when I was in Ho Chi Minh City.

A. I didn't see Bob since I was in Ho Chi Minh City.

B. I could see Bob if I was in Ho Chi Minh City.

C. I haven't seen Bob since I was in Ho Chi Minh City.

D. When I was in Ho Chi Minh City, I saw Bob.

* Đáp án

C

* Hướng dẫn giải

Đáp án: C

Chuyển đổi từ quá khứ đơn sang hiện tại hoàn thành: 

S + last + V-ed/V2 + ..... khoảng time + ago.

in + mốc time

When S + V-ed/V2 + O

S + hasn't / haven't + V-ed/V3 + for + ...... khoảng time

Since + mốc time

Since + S + V-ed/V2 + O

It's + time + since + S + last + V-ed/V2 + O

The last time + S + v-ed/V2 + .... + was + khoảng time + ago.

Dịch: Tôi đã không gặp Bob kể từ khi tôi ở Thành phố Hồ Chí Minh.

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