1. Complete the sentences by putting the verbs in brackets into the past continuous. 1. They (help) _________ the flood victims at 10 o'clock last night. 2. It (not snow) _________ when I left home this afternoon. 3. While she (work) _________ the field, the tornado came. 4. - What _________ you (do) _________ at 9 o'clock yesterday morning? - I (watch) _________ the news about a volcanic eruption. 5. - _________ you (cry) _________ when I saw you two days ago? - No, I wasn't. help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Của cậu nà :

1. were helping.

=> Cấu trúc : S + tobe (TQKTD) + V_ing.

2.wasn't snowing.

=> Cấu trúc : S + tobe(TQKTD) + not + V_ing.

3.was working.

=> Cấu trúc : S + tobe (TQKTD) + V_ing.

4.were...doing.

=> Cấu trúc : WH_ + tobe(TQKTD) + S + V_ing?

5. Were...crying.

=> Cấu trúc : Tobe(TQKTD) + S + V_ing?

1 were helping

- DH: At 10 o'clock last night

2 isn't snowing

- DH: When

3 was working

- DH: While

4 were, doing - was watching

- DH: At 9 o'clock yesterday morning

5 were, crying

- QKTD when / while QKĐ: Khi ...

- Quá khứ tiếp diễn:

(+) S + was/were + V-ing + O.

(-) S + was/were + not + V-ing + O.

(?) Was/were + S + V-ing + O?