`I`.

`1`. I was writting my reports at 8 o'clock last night

`2`. They were playing tennis at 10.30 yesterday morning

`3`.  Ann was doing homework at 5 o'clock this afternoon

`4`. My father was washing car from five to six

`II`.

`1`. This time last year, we were living in France

`2`. The students were offering flowers to the visitors

`3`. I was cooking dinner half an hour ago

`4`. She was working in the studio at that time

Cấu trúc:

   ( + ) S + was / were + V-ing

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

   ( ? )  Was / were + S + V-ing?

Dấu hiệu nhận biết:

   - Giờ + trạng từ quá khứ (vd: at 3pm yesterday,...)

   - At this / that time + trạng từ quá khứ (vd: at this time last week,...)

#BTS

$\text{1.}$

$\text{1.}$ I was writing my report at 8 o’clock previous night.

$\text{2.}$ They were playing tennis at 10.30 the day before morning.

$\text{3.}$ Ann was doing homework 5 o'clock this afternoon.

$\text{4.}$ My father was washing car from five to six.

$\text{2.}$

$\text{1.}$ This time last year, we were living in France.

$\text{2.}$ This students offered flowers to the visitors.

$\text{3.}$ I was cooking dinner half an hour ago.

$\text{4.}$ She was working at the studio at that time.

Cấu trúc quá khứ tiếp diễn:

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

(-) S + wasn’t / weren’t + V-ing

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