1.while we ( present) ......our project, the audience(listen)...... attentively

2.someone(fall)..... into the water. Harry (realise)..... who it was and (jump).... in too

3. while I (watch).... TV, I (see).... the floods and landslides in the area

4. while I (have).... a chat with Amy, her mum (prepare)..... us some snack

`***` CT: While/When + S + was/were + V-ing, S + was/were + V-ing

`->` Diễn tả 2 hành động cùng song song xảy ra trong quá khứ

`-` 'was' dùng với N số ít/he/she/it/I, 'were' dùng với N số nhiều/we/you/they

`***` CT: While/When + S + was/were + V-ing, S + Ved/c2

`->` Diễn tả hành động đang diễn ra thì có hành động khác chen ngang vào

`-----------`

`1.` were presenting - was listening

`2.` fell - realised - jumped

`-` Câu diễn tả một loạt hành động xảy ra trong quá khứ `->` Thì QKĐ

`-` Form `(+)`: S + Ved/c2

`3.` was watching - saw

`4.` was having - was preparing

1.while we were presenting...our project, the audience listened..... attentively 2.someone fell. into the water. Harry realised.... who it was and jumped... in too

3. while I was watching.. TV, I saw... the floods and landslides in the area

4. while I was having... a chat with Amy, her mum was preparing..... us some snack

giai thich :

1. hanh dong dang xay ra trong qua khu , ta dung thi qua khu tiep dien, hanh dong da dien ra va hoan tat , dung thi qua khu don

2.dien ta su viec xay ra trong qua khu, ta dung thi qua khu

3. giong truong hop cau 1

4. hai hanh dong xay ra cung luc trong qua khu, ta dung qua khu tiep dien

chuc ban hoc mau tien bo nhe !