Exercise 1: Chia dạng đúng của động từ của thì trong ngoặc ở thì thích hợp.

1. At this time yesterday we (play) tennis in the
2. At 7 p.m yesterday he (watch)
3. Yesterday while  my father (watch)                   TV,  my mother (read)            the newspaper, my sister (do)              her homework and I (play)                                       chess with my
4. What were you doing when I phoned you? I (have) a
5. She (do) her homework at the time
6. Marry (water) the flowers at 3 p.m
7. They (visit) the zoo at ten o'clock yesterday.
8. Peter and I (do) the exercise at this time last
9. At 7 p.m last night my father (feed) the pigeons.

10.At this time last year we (learn)         English in London

` Answer : `

` 1. ` were playing

` @ ` Thì QKTD :

 ` - ` DHNB : At this time + Thời gian trong QK

` 2. ` was watching

` @ ` Thì QKTD :

` - ` DHNB : At ` 7 ` p.m

` 3. ` was watching ` - ` was reading ` - ` was doing ` - ` was playing

` @ ` Thì QKTD :

` - ` While + S + was/were + V-ing

` 4. ` was having

` @ ` Thì QKTD 

` 5. ` was doing

` @ ` Thì QKTD 

` - ` DHNB : at the time

` 6. ` was watering

` @ ` Thì QKTD :

` - ` DHNB : at ` 3 ` p.m

` 7. ` were visiting

` @ ` Thì QKTD :

` - ` DHNB : at ` 10 ` o'clock yesterday

` 8. ` were doing

` @ ` Thì QKTD :

` - ` DHNB : at this time + TG trong QK

` 9. ` was feeding

` - ` DHNB : At 7 p.m last night

` @ ` Thì QKTD

` 10. ` were learning

` @ ` Thì QKTD 

` - ` DHNB: At this time last year 

Giải thích các bước giải:

` @ ` Thì QKTD : S+ was/were+ Ving

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

` #Pyy# `

`1)` were playing

`2)` was watching

`3)`

`*` was watching

`*` was reading

`*` was doing

`*` was playing

`4)` was having

`5)` was doing

`6)` was watering

`7)` were visiting

`8)` were doing

`9)` was feeding

`10)` were learning

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

`@` $\text{Quá khứ tiếp diễn}$

(+) S + was`/`were + V_ing + ...

(-) S + was`/`were + not + V_ing + ...

(?)  Was`/`Were + S + V_ing + ...?

`@` Cách dùng: 

`-` Miêu tả hành động đang xảy ra tại một thời điểm xác định trong quá khứ

`-` Miêu tả hành động đang xảy ra trong một khoảng thời gian xác định trong quá khứ

`-` Miêu tả hai hay nhiều hành động diễn ra song song trong quá khứ

`-` Miêu tả hành động đang xảy ra trong quá khứ thì có hành động khác xen vào (hành động xen vào dùng thì quá khứ đơn)

`color{#adff2f}{#}color{#caff70}{Z}color{#bcee68}{e}color{#a2cd5a}{u}color{#6e8b3d}{s}color{#698b22}{9}color{#556b2f}{9}`