1.when she ( see)..... the waiter, she (shout)...."help"

2.while we (have).... a discussion about the children, we (agree)..... to organise some after-school activities for them

3. while Dan (sleep).... the chairs, Joe (garden)....

4.when An's father (come).... to pick her up after school , I (help).... An with her homework

5.Kate (have)...... dinner ; then she (go) ....to sleep

6. we (see).... many unhappy children while we (help)..... people in remote areas

`color{pink}{Harry}`

`1`. saw `-` shouted

`2`. were having `-` agreed

`3`. was sleeping `-` was gardening

`4`. came `-` helped

`5`. had `-` went

`6`. saw `-` were helping

_______________________`CT`__________________________

Công thức thì quá khứ đơn

(`+`) S + V-ed + ...

(`−`) S + didn't + V-inf

( `?` ) Did + S + V-inf .... ?

`***` Dấu hiệu nhận biết: Yesterday, ago, last,..

. `+` Khoảng thời gian trong quá khứ

Thì quá khứ tiếp diễn

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

(`+`) S + tobe (was/were) + `V`-ing + ...

(`?`) Tobe (was/were) + S + `V`-ing ....`?`

`->` diễn tả hành động đang diễn ra tại thời điểm cụ thể trong quá khứ, nhấn mạnh quá trình của hành động, sự việc diễn ra mang tính chất kéo dài.

Thì quá khứ đơn : 

`-` Động từ tobe ( V tobe ) 

( + ) S + was / were +  N/adj 

( - ) S + was / were + not + N  / adj 

( ? ) Was / Were + S + N / adj ? 

o was not = wasn't 

o were = weren't 

`-` Động từ thường ( V thường ) 

( + ) S + Ved / V3 

( - ) S + did not / didn't + V-inf 

( ? ) Did + S + V-inf ? 

o V-inf : động từ nguyên thể 

_ _ _ _ _ __ _ _ _ _ _  _ _ _

Thì quá khứ tiếp diễn : 

( + ) S + was / were + V-ing + ... 

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

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

o He / She / It / N số ít + was 

o We / They / You / N số nhiều + were 

 ________________________________________________________

`1` . saw  ,   shouted 

`2` . were having   ,   agreed 

`3` . was sleeping   , was gardening 

`4` . came   , helped 

`5` . had   , went 

`6` . saw   ,  were helping 

@vibimaibeng .