• He said he didn't have much time to talk to me.
• If Tom had a passport, he could travel abroad.
• If Phong had enough money, he could buy that expensive car.
• That is the man who is my new English teacher.
• Tom asked if I knew the girl over there.
• I can't remember the name of the garage where we had the car repaired.
• If we had enough money, we would go on holiday.
• The porter told me he would wake me up when the train arrived in Leeds.
• The bus which goes to Long Bien doesn't run today.
• Mr. Minh said he was doing a project on the world's leading environmental organisations.
• If Sue had Tony's email address, she could send him a message.
• Mai asked Anna what product was made from wildlife skins.
• The article which is about smartphones has become an excellent study tool.
• If you save some money, you will be able to buy the house.

12. He said, "I don't have much time to talk to you." (reported speech)
→ He said that he didn't have much time to talk to me.
Giải thích: Chúng ta chuyển câu trực tiếp thành gián tiếp. Thời gian "do not" đổi thành "did not".

13. Tom doesn’t have a passport. He can’t travel abroad. (conditional sentence)
→ If Tom had a passport, he could travel abroad.
Giải thích: Đây là câu điều kiện loại 2, dùng để nói về tình huống không có thực ở hiện tại.

14. If Phong doesn’t have enough money, he can’t buy that expensive car. (conditional sentence)
→ If Phong had enough money, he could buy that expensive car.
Giải thích: Đây cũng là câu điều kiện loại 2, diễn tả một sự thật không có thực.

15. That man is my sister’s new English teacher. (relative clause)
→ The man who is my sister's new English teacher is here.
Giải thích: Sử dụng mệnh đề quan hệ "who" để giới thiệu thêm thông tin về "the man".

16. Tom asked, "Do you know the girl over there?" (Using a relative pronoun)
→ Tom asked if I knew the girl who was over there.
Giải thích: "Who" là đại từ quan hệ sử dụng để nối câu hỏi và câu khẳng định.

17. I can’t remember the name of the garage. We had the car repaired at this garage. (Using a relative pronoun)
→ I can't remember the name of the garage where we had the car repaired.
Giải thích: Trong câu này, "where" được dùng để nêu địa điểm.

18. “We don’t go on holiday because we don’t have enough money.” (using reported speech)
→ They said that they didn't go on holiday because they didn't have enough money.
Giải thích: Lưu ý cách chuyển đổi thì và đại từ trong câu.

19. The porter said to me, "I'll wake you up when the train arrives in Leeds." (using Reported speech)
→ The porter told me that he would wake me up when the train arrived in Leeds.
Giải thích: Đây là cách chuyển đổi câu trực tiếp thành câu gián tiếp.

20. The bus to Long Bien doesn’t run today. (combine 2 sentences, using relative pronoun)
→ The bus which goes to Long Bien doesn’t run today.
Giải thích: Sử dụng "which" để kết nối hai câu thành một.

21. “I’m doing a project on the world’s leading environmental organisations,” Mr. Minh said.
→ Mr. Minh said that he was doing a project on the world’s leading environmental organisations.
Giải thích: Chuyển từ câu trực tiếp sang gián tiếp, lưu ý thời gian.

22. “I don’t have Tony’s email address so he can’t send him a message.” Mr. Minh said.
→ Mr. Minh said that he didn’t have Tony’s email address so he couldn’t send him a message.
Giải thích: Giữ nguyên thông tin khi chuyển câu.

23. Mai said to Anna, “What products do you make from wildlife skins?”
→ Mai asked Anna what products she made from wildlife skins.
Giải thích: Chuyển từ câu hỏi trực tiếp thành gián tiếp.

24. “I talk about smartphones. They have become excellent study tools.”
→ She said that she talked about smartphones, which had become excellent study tools.
Giải thích: Sử dụng "which" để liên kết hai mệnh đề.

25. “Save some money or you won’t be able to buy the house.”
→ He said to save some money or I wouldn’t be able to buy the house.
Giải thích: Chuyển đổi từ lời khuyên trở thành câu gián tiếp.