1. All the students love the principal because of his kindness.
-> Because of + N/Ving: bởi vì
2. I am sorry for having forgotten the tickets.
-> sorry for + N/Ving
3. If I hadn't seen it with my own eyes, I wouldn't have believed it.
-> If 3 : If + S1 + had + Vpp, S2 + would + have + Vpp
4. The house at the end of the street which has been empty for years has been sold.
-> Which thay cho vật đóng vai trò chủ ngữ/túc từ
5. I wish he took the doctor's advice.
-> Câu mong ước lùi thì, chuyển về khẳng định.
