1. Lan asked me why I didn't ask the teacher to explain the question again.

→ S + asked + O + Wh/H + S + V(lùi thì): câu tường thuật dạng câu hỏi Wh/H ( lùi thì HTĐ → QKĐ )

2. He has studied English for four years.

→ S + started/began + V_ing/to_V ... + time

= S + have/has + V3/ed + for + khoảng thời gian

                                       + since + mốc thời gian

3. Their work will be finished tomorrow.

→ câu bị động thì TLĐ: S + will + be + V3/ed + (by+O) + time

4. I wish I could play the piano.

→ S + wish(es) + S + would/could/should/might + V0: future wish

5. My bike isn't as expensive as yours

→ so sánh bằng: S + Vbe + as + Adj + as + S

6. I wish there weren't only two seasons in your city:dry and wet season you didn't like spring and autumn.

7. She decides to receive his present.

→ S + decide(s) + to_V: quyết định làm việc gì đó

8. They used to play volleyball well

→ S + used to + V0 : đã từng làm 1 việc gì đó

@ $Âu$

1.Lan asked me why i didn't ask the teacher to explain the question again-câu gián tiếp trong câu hỏi có từ để hỏi

S+askwd/told...Wh+S+V lùi 1 thì....

2.he has studied English for four years-S+Ved/c3...+for+1 khoảng t/gian

3.their work will be finished tomorrow-chủ ngữ câu dưới là tân ngữ câu trên->bị động

4.i wish i could play the piano-S+wish(es)+Ved/c2....

5.my bike isn't as expensive as yours-so sánh bằng:is/are(not)as+Adj/Adv+as...

6.i wish there weren't two seasons in your....-S+wish(es)+Ved/c2....

8.they used to play volleyball well-used to+V:đã từng

7.she decide to receive his present