Make a complex sentence from each pair of sentences:

1. They were reading. their mother was watching tv (while).

→ They were reading while their mother was watching tv.

- While :  Nói về 2 hành động xảy ra gần như cùng 1 lúc với nhau. 

- CT : S+ was/were+ Ving+ while +S+ was/were+ Ving

2. He had checked every door. he went out today (before).

→ Before he went out today, he had checked every door.

- Before : “trước đó” - diễn tả một hành động đã diễn ra trước một hành động khác.

- Before + simple past, past perfect

3. I took a bus home instead of working because it was getting every dark.

→ I took a bus home instead of working as it was getting every dark.

- Thì quá khứ đơn. 

- CT : S + V2/Ved

- Instead of + V-ing : Thay vì

#phamducdien 14th10

1. They were reading while their mother was watching tv

S+ was/were+ Ving+ while +S+ was/were+ Ving: diễn tả 2 hành động đang diễn ra song song trong quá khứ

2.Before  he went out today, he had checked every door

Before+S+ Vqkđ, S+ had+Pii

3. I took a bus home instead of working as it was getting every dark

Because= since= as+ CL: bởi vì