* Vì ở đây chúng ta sẽ có cấu trúc có dạng như sau đây: 

⇒ Câu when có When+S+was\were+V_ing+O; S+ V_ed\2+O

⇒ Câu while có while +S+ was\were+V_ing +O; S+ V_ed\2+O

→ Diễn tả một sự vc đang diễn ra thì một sự vc khác xen vào.

→ Hai cấu trúc này đều diễn tả sự vc xảy ra trong quá khứ hết.

1 was watching , called

2 jumped , rescued 

3 saw , lived 

4 rang , were playing

5 was writing

6 were playing , started 

7 met , lived 

8 was working , decided 

9 was raining , decided 

10 was shining , decided 

Học tốt!!!

Past simple / Past Continuous exercises

1. was watching - called 

2. jumped - rescued

3. saw - lived

4. rang - were playing

5. was writing 

6. were playing - started to 

7. met - lived

8. was working - decided

9. was raining - decided

10. was shining - decided 

Cách giải :

- Sau while là QK tiếp diễn.

- Sau when là QK đơn.

- Hành động đang diễn ra trong quá khứ ( was/were Ving) bị chen bởi một hành động khác (V2/ed)