`51.` "Please wake me up at `8` o'clock tomorrow morning." I told the hotel porter.

`->` Please do sth: xin vui lòng hãy làm gì

`->` tell sb sth: bảo ai cái gì

`52.` The date of the meeting will have to be changed again.

`->` Bị động `-` ĐTKT:
S + ĐTKT + be + P2 + (by O)

`53.` We are going to have the car repaired by the garage next week.

`->` have sth done by sb: nhờ ai lam gì

`54.` The train doesn't take as long as the bus.

`->` So sánh ngang bằng `-` adv:
S + V + as + adv + as + S

`55.` It is over six months since John had his hair cut.

`->` It is + time + since + S + (last) + Ved/V2

`56.` Maria wishes she had been put in a higher class.

`->` Mong ước ở quá khứ:
S + wish(es) + (that) + S + had + P2

`57.` I'll finish the work tonight if you want.

`->` Điều kiện loại `1:`

S + will/can/shall + V-bare + if + S + V-(s/es)

`58.` In case you get hungry on the train, you should take some sandwiches.

`->` In case + clause, clause: trong trường hợp...

`59.` If my husband had left the car keys, I could have picked him up at the station.

`->` Điều kiện loại `3:`

If + S + had + P2, S + would/could + have + P2