Giúp tui với bài này khó :v

`-` Thì QKĐ : S + Ved / V2

`-` BĐ `-` QKĐ : S + was / were + VpII ( by O )

`*` I , He , She , It `+` was

`*` You , We , They `+` were

`->` `DHNB` : yesterday , last , ago , .... 

`->` Dùng để diễn tả hành động đã xảy ra trong Quá khứ

`1`.built

`->` Our house was built in `2015`

`2`.sent

`->` Her postcard was sent this morning

`\text{# TF}`

Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

Công thức thì QKĐ - bị động:

(+) S + was/were + V3/ed

(-) S + was/were + not + V3/ed 

(?) Was/Were + S +V3/ed ?

------------------------------------------------------

1.

- We built our house in 2015.

- Our house was built in 2015.

2.

- He sent her postcard this morning.

- Her postcard was sent this morning.

`color{orange}{~LeAiFuRuiHuiBao~}`