`1,` 

`-)` They didn't watch a good footballmatch on TV last night

`?)` Did they watch a good footballmatch on TV last night?

`2,` 

`-)` Peter didn't send that letter to Mary yesterday morning

`?)` Did Peter send that letter to Mary yesterday morning?

`3,` 

`-)` Jane's mother didn't buy a new car last month

`?)` Did Jane's mother buy a new car last month?

`4,` 

`-)` We didn't visit Halong Bay three years ago

`?)` Did we visit Halong Bay three years ago?

`5,` 

`-)` They didn't leave for Hai Phong in 1990

`?)` Did they leave for Hai Phong in 1990?

`6,` 

`-)` They didn't build a new school in my village ten months ago

`?)` Did they build a new school in your village ten months ago?

`7,` 

`-)` I didn't borrow a lot of book in the library last weekend

`?)` Did you borrow a lot of book in the library last weekend?

`8,` 

`-)` We didn't buy a house near Thao's house in 2009

`?)` Did you buy a house near Thao's house in 2009?

_____________________________

`->` Sử dụng thì QKĐ để viết lại câu

`->` Công thức:

`+)` S `+` V(s/es)

`-)` S `+` didn't `+` V

`?)` Did `+` (not) `+` S `+` V

`1.` `(-)` They didn't watch a good footballmatch on TV last night.

`(?)` Did they watch a good footballmatch on TV last night?

- last night : DH thì Quá khứ đơn

`2.` `(-)` Peter didn't send that letter to Marry yesterday morning.

`(?)` Did Peter send that letter to Marry yesterday morning?

- yesterday morning : DH thì Quá khứ đơn

`3.` `(-)` Jane's mother didn't buy a new car last month.

`(?)` Did Jane's mother buy a new car last month?

- last month : DH thì Quá khứ đơn

`4.` `(-)` We didn't visit Halong Bay three years ago.

`(?)` Did you visit Halong Bay three years ago?

- three years ago : DH thì Quá khứ đơn

`5.` `(-)` They didn't leave for Hai Phong in 1999.

`(?)` Did they leave for Hai Phong in 1999?

- in 1999 : DH thì Quá khứ đơn

`6.` `(-)` They didn't build a new school in my village ten months ago.

`(?)` Did they build a new school in your village ten months ago?

- ten months ago : DH thì Quá khứ đơn

`7.` `(-)` I didn't borrow a lot of book in the library last weekend.

`(?)` Did you borrow a lot of book in the library last weekend?

- last weekend : DH thì Quá khứ đơn

`8.` `(-)` We didn't buy a house near Thao's house in 2009.

`(?)` Did you buy a house near Thao's house in 2009?

- in 2009 : DH thì Quá khứ đơn

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

`***` Cấu trúc thì Quá khứ đơn (với động từ thường):

`(+)` S + V2(ed/BQT) + O.

`(-)` S + did + not + V(inf) + O.

`(?)` Did + S + V(inf) + O?

`__________`

`***` Cấu trúc thì Quá khứ đơn (với Tobe):

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

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

`(?)` Was/Were + S + C?