1. Never has he been late for work.

2. The man who is talking to the lady over there is my new boss.

3. The postman asked the boy if Mr. Pike lived there.

4. A new school will be built next month.

5. It is not easy/ It is difficult to find an apartment in a big city.

1. Never has he been late for work.  

+) Never + trợ động từ + S + V

2. The man who is talking to the lady over there is my new boss. 

Hoặc rút ngọn mệnh đề: The man talking to the lady over there is my new boss. 

+) Đại từ quan hệ "who" tương ứng với chủ ngữ chỉ người (the man). 

3. The post man asked the boy if Mr.Pike lived there.

+) Câu gián tiếp với câu hỏi "Yes-No": S + asked + O + if/whether + S + V(lùi thì)+..

+) Lùi thì: HTĐ → QKĐ 

+) Đổi trạng ngữ: here → there

4. A new school will be built next month.

+) Câu bị động thì TLĐ: S + will + be + VPII

5. It is not easy to find an apartment in a big city.

+) Ving + .... + be + Adj 

⇒ It is + Adj + to V ...