${38.}$ My teacher asked me what I was worried about.

→ câu gián tiếp dạng câu hỏi Wh/H: S + asked +(O)/ wondere/ wanted to know + Wh/H + S + V(lùi thì) 

${39.}$ Hoa said she had a big problem and she couldn't get good grades at English.

→ câu gián tiếp dạng câu trần thuật: S + said/ said to + O/ told + O + Wh/H + S + V(lùi thì) 

${40.}$ Nam asked me if I liked to make handicrafts.

→ câu gián tiếp dạng câu hỏi Yes/No: S + asked +(O)/ wondere/ wanted to know + if/wheter + S + V(lùi thì) 

${41.}$ I don't know what to do.

→ áp dụng cấu trúc: S + V + Wh/H + to_V

${42.}$ I have no idea when to leave for the bus.

→ tương tự câu 41

${43.}$ If I were you, I would relax after a hard working week.

→ câu đk loại 2 ( diễn tả 1 sự việc không thể xảy ra ở hiện tại ): If + S + QKĐ ( Vbe thì dùng were (not) ), S + would/could (not) + V0

38. My teacher asked me What I had worried about

S + asked + O + Wh-word + S(o) + V(lùi thì) + ...

39. Hoa said that she had a big problem so she couldn't get good grades at English

S + said that + S + V(lùi thì) + ....

40. Nam asked me If I liked to make handicrafts

S + asked + O + if + S(o) + V(lùi thì) 

Cụm like + ( O ) + to V

41. I don't know what to do

S + V(not) + Wh-word + to V

42. I have no idea when to leave for the bus

S + V(not) + Wh-word + to V

43. If I were you, I would relax after a hard working week

S + V(not) + Wh-word + to V

ĐÂY A

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