1. The telephone / ring / while / we / have dinner
⇒  The telephone rang while we were having dinner. 

(Điện thoại reo trong khi chúng tôi đang ăn tối.)
2. I / wait / at the bus stop / when / I / receive / his text message
⇒ I was waiting at the bus stop when I received his text message. 

(Tôi đang chờ ở trạm xe buýt thì nhận được tin nhắn của anh ấy.)
3. It / start / to rain / while / we / walk home / from school
⇒ It started to rain while we were walking home from school. 

(Trời bắt đầu mưa khi chúng tôi đang đi bộ về nhà từ trường.)
4. You / listen / when / the teacher / call / your name?
⇒ Were you listening when the teacher called your name?

(Bạn có đang lắng nghe khi giáo viên gọi tên bạn không?)
5. He / walk along / the corridor / he see / a job advertisement / on the notice board
⇒ He was walking along the corridor when he saw a job advertisement on the notice board. (Anh ấy đang đi dọc hành lang thì anh ấy nhìn thấy một quảng cáo tuyển dụng trên bảng tin.)

CHÚC BẠN HỌC TỐT./.

`1.` The telephone rang while we were having dinner.

`2.` I was waiting at the bus stop when I received his text message.

`3.` It started to rain while we were walking home form school.

`4.`  Were you listening when the teachers called your name? 

`5.` He was walking along the corridor when he saw a job advertisement on the notice board.

- Form: S + V2/V-ed + ... + while + S + was/were + V-ing + ...

- Form: S + was/were + V-ing + ... + when + S + V2/V-ed + ...