Quá khứ đơn và quá khứ tiếp diễn

1. was calling ( 'at 9 last night' -> QKTD )

   wasn't ( QK đơn )

   was studying ( QKTD )

2. didn't hear ( 'last night' -> QK đơn )

   was sleeping ( HĐ đang diễn ra -> QKTD )

3. was shining ( QKTD )

    were singing ( có 'and' ; vế trước là QKTD )

4. were talking 

    walked 

( HĐ đang diễn ra trong quá khứ bị chen bởi HĐ khác )

5. weren't ( QK đơn do 'went' )

   were playing ( QKTD )

6. felt ( QK đơn -> HĐ diễn ra bất ngờ )

   was reading ( QKTD -  'while' )

7. was snowing ( QKTD )

   was shining ( QKTD )

8. was shovelling ( QKTD - 'while' )

   brough ( QK đơn -> HĐ diễn ra bất ngờ )

9. had ( 'last week' -> QK đơn )

   was driving ( QKTD )

   hit ( QK đơn )

10. decided ('ago' -> QK đơn )

     were starving ( QKTD )

11. were waiting ( QKTD )

     arrived ( QK đơn - 'when' )

12. was swiming ( QKTD )

     saw ( QK đơn )

13. Were they playing ( QKTD )

     started ( QK đơn )

14. were driving (QKTD )

    stopped ( QKĐ - 'when' )

15. was blowing ( QKTD)

     went ( QK đơn - 'when' và 'went' )

16. was building ( 'at this time last year' -> QKTD )

17. was driving ( QKTD )

18. was chatting

     was teaching ( QKTD hai hành động // )

19. was watching ( QKTD )

20. was preparing ( QKTD - 'at this time yesterday' )

21. was you doing ('at 8 pm yesterday' -> QKTD )

w

   

1. called/wasn't/was studying

2. didn't/was sleeping

3. was shining/were singing

4.were/walked

5.weren't/were playing

6.fell/read

7.snowed/shined

8. was shoveling/brought

9. had/was driving/hit

10.decided/starved

11. were waiting/arrived

12. was swimming/saw

13. were/playing/started

14. were driving/stopped

15. was blowing/went

16. built

17 was driving

18 chatted/tought

19 was watching

20 prepared

21 câu sai ngữ pháp