1. I last saw Bob in Ho Chi Minh City . --> I haven't seen________________ 2.I'm sure that someone forgot to lock the door . -->Someone must__________________ 3.You should drink more water to stay hydrated. --> You ought to________________________________ 4.You might be late for the meeting . ( possible ) -->You _______________________________________

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

GT:

Cấu trúc:

S + last + Ved/VPII + when S + Ved/VPII: Ai đó làm gì lần cuối khi nào

= S + haven’t/ hasn’t + PII + since S + Ved/VPII: Ai đó chưa từng làm gì kể từ khi nào

2. Someone must have forgotten to lock the door.

GT: 

must have VPII: chắc chắn xảy ra (trong QK)

3. You ought to drink more water to stay hydrated.

GT:

should + V(inf) = ought to V(inf): nên làm gì

4.

Cách 1: You could be late for the meeting

can/could V(inf) = may/might V(inf): có khả năng làm gì/xảy ra việc gì (Mình nghĩ possible chỉ khả năng)

Cách 2: Dùng từ possible: You are possible to be late for the meeting.

S + be + possible + (for sb) + to V... : ai đó có khả năng làm gì

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$#Eng$
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##KHÔNG HIỂU CỨ HỎI##

1. I haven't seen Bob since I was in HCM City.
   S + last + Ved/2 + when S + Ved/V cột 2 = S + haven’t/ hasn’t + PP + since +S + Ved/3
2. Someone must have forgotten to lock the door.
   must have+PP: nói về 1 sự việc chắc chắn đã xảy ra trong QK.
3. You ought to drink more water to stay hydrated.
   Ought to= Should+ $V_{inf}$ : nên làm j đó.
4. You are possible to be late for the meeting..
    tobe+possible to=may/might/can/could/to be able to+ to do sth( $V_{inf}$)...: có thể làm việc j
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