=>
1. If we recycle, we will save natural resources.
-> câu đk loại 1 If S Vs/es, S will V
2. If you don't hurry up, you will be late for work.
-> câu đk loại 1 If S Vs/es, S will V
3. I asked him where he lived.
-> câu tường thuật, lùi thì HTĐ -> QKĐ
4. The examiner asked me what I did to improve my English.
-> câu tường thuật, lùi thì HTĐ -> QKĐ
5. Peter said to Mary that he would come with her as soon as he was ready.
-> -> câu tường thuật, lùi thì HTĐ -> QKĐ/ will -> would
6. John said that he had to stay at home that night to finish his homework.
-> câu tường thuật, must -> had to
7. Nam said to Hoa that he would help her whenever she needed him
-> câu tường thuật, will -> would
8. Lan said that she could use her telephone if you needed it.
-> câu tường thuật dạng câu đk loại 1 (lùi thì/ can -> could/ HTĐ -> QKĐ)
9. The driver asked the passengers not to get off the bus while it was moving.
-> asked sb to V : yêu cầu ai làm gì
10. He said that he wished he knew the answer.
-> câu tường thuật, lùi thì wish -> wished (vế sau wish -> không lùi)