1. We were made study hard for our exam by the teacher

2. Mrs. Chi asked her son where they would spend their holiday the following month

3. If we waste energy, our sources of energy will soon end

4. I wish I could play the guitar well

5.  Mrs.Tam works more carefully than others  do

6. Although that exercise is difficult, my brother could do it quickly

`1.` We were made to study hard for our exam by my teacher.

Giải thích: Câu trực tiếp: make somebody do something `->` Câu gián tiếp: be made to do something.

`2.` Mrs. Chi asked her son where they would spend their holiday the following month.

Giải thích: Câu tường thuật với Yes/No question: S1 asked S3 WH- S V-lùi thì.

`3.` If we waste energy, our sources of energy will soon end.

Giải thích: Câu điều kiện loại 1 diễn tả giả thiết có thật ở hiện tại: If S V(s/es), S will V.

`4.` I wish I could play the guitar well.

Giải thích: Ước một điều không có thật trong hiện tại: wish + V-ed.

`5.` Mr. Tam works more carefully than others do.

Giải thích: So sánh hơn: S + V + more + ADV + than + S + V.

`6.` Although that exercise was difficult, my brother could do it quickly.

Giải thích: Despite + N/V-ing = Although + Mệnh đề.