18. She asked me if I could speak English

19. Thanh asked her teacher if she would finish her exercise at home

20. Nien asked Hoa if she had many new friends

21. My friend asked me if I was going to leave the following day

22. They asked us if I had to go then

23. I asked Nam if he was free that night

24. She asked the tourists if they knew the way to the station

25. John asked Nhi if Phong Nha Cave was in southern Vietnam

26. The visitors asked if they could take photos

27. Daniel asked Tim if there was a cafe nearby

28. He told me not to forget to post the letter

29. Nhi said that she was visiting Hoi An then

30. The customs officers asked me if I could open my bag

Câu 18 -> 27, 30: Reported speech dạng yes/no question:

S1 + asked + O + if/whether + S2 + V (lùi thì)

Câu 28: reported speech dạg command/request:

S + told/asked + (s.b) + (not) + to Vo

Câu 29: reported speech dạng statement:

S1 + said/said to s.b/ told s.b + (that) + S2 + V (lùi thì)..............

* QUy tắc lùi thì

Hiện tại đơn -> quá khứ đơn

Hiện tại tiếp diễn -> Quá khứ tiếp diễn

Hiện tại hoàn thành -> QUá khứ hoàn thành

QUá khứ đơn -> Quá khứ hoàn thành

Quá khứ tiếp diễn -> Quá khứ hoàn thành

Tương lai đơn (will + Vo) -> tương lai trong quá khứ ( would + vo)

Can/ may/ must, have to, has to -> could/ might/ had to

* Đổi trạng từ/ cụm trạng từ:

this -> that           these -> those

Here -> there         now -> then

Ago -> before        today -> that day

Tonight -> that night      tomorrow -> the next day/ the day after/ the following day

yesterday -> the day before/ the previous day

Last month/ year... -> the month/year ...before

                                   The previous month/ year...

Next month/year... -> the month/year...after

                                   The following month/year...

#HNgoc