`1` were playing 

`2` was preparing 

`3` were playing 

`4`  was practicing 

`5` weren't cycling 

`6`  was working / were swimming 

`7`  wasn't listening 

`8`  were you doing 

-> Chia theo thì quá khứ tiếp diễn : 

(+) S + was / were + Ving + O 

(-) S + wasn't / weren't + Ving + O 

(?) Was / Were + S + Ving + O ? 

-> Chủ ngữ là số ít - dùng was 

-> Chủ ngữ là số nhiều- dùng were 

____

@ Dorris

Đây là thì quá khứ tiếp diễn:

khẳng định: S+was/were+Ving+O

phủ định: S+was/were+not+Ving+O

nghi vấn: Were/was+S+Ving+O?

lưu ý: I, she, he, it +was

          They, we, you +were

1. Were playing

2. was preparing

3. Were playing

4. was practicing

5. weren't cycling

6. was working/were swimming

7. wasn't listening

8. Were you doing

Chúc bạn học tốt!