`\text{Exercise 1}`

1. were playing

2. wasn't feeding

3. was watching/ was doing

4. Were/ having

5. Was/ doing

6. was watering

`\text{Quá khứ tiếp diễn}`

(+) S + was/were + Ving + (O).

(-) S + wasn't/weren't + Ving + (O).

(?) Was/Were + S + Ving + (O)?

`\text{Exercise 2}`

1. arrived/ wasn't sleeping

2. wne/ were having

3. was having/ stopped

4. came/ was working

5. were crossing/ saw

6. Did/ saw/ was standing

7. Were/ playing/ came

8. rang/ was taking

Diễn tả hành động đang xảy ra thì 1 hành động khác xen vào trong QK.

Hành động đang xảy ra: Quá khứ tiếp diễn: $\textit{S + was/were + Ving + (O)}$

Hành động xen vào: Quá khứ đơn: $\textit{S + Ved/VPI + (O)}$

$\text{Lưu ý: "WHEN" dùng được với thì QKĐ lẫn QKTD, nhưng "WHILE" chỉ dùng được với thì QKTD}$

Diễn tả hành động đang xảy ra thì 1 hành động khác xen vào trong QK.

Hành động đang xảy ra:

Quá khứ tiếp diễn:

$\textit{(+) S + was/were + Ving + (O)}$

$\textit{(-) S + wasn't/weren't + Ving + (O).}$

$\textit{(?) Was/Were + S + Ving + (O)?}$

Hành động xen vào: 

Quá khứ đơn:

$\textit{(+) S + Ved/VPI + (O)}$

$\textit{(-) S + didn't + Vinf + (O)}$

$\textit{(?) Did + S + Vinf + (O)?}$

Exercise 1:

1. Were playing

=> Quá khứ tiếp diễn vì có at this time yesterday.

2. Wasn't feeding.

=> Như câu trên có at 7p.m last night.

3. Was watching, was doing, was playing.

4. Were you having.... ?

5. Was she doing.... ?

6. Was watering.

=> Quá khứ đơn vì có 3p.m yesterday.

Exercise 2:

1 . Arrived, didn't sleep.

2. Went, were having.

3. Had, was stopped.

4. Came, was working.

5. Crossed,were seeing.

6. Did Tom see, was standing.

7. Did the children play, was coming.

8. Rang, was taking.

Hết. Chúc bạn học tốt. Vote và cho mk xin ctlhn nha