`1,` G.Khanh and M.Khanh were on Sam Son beach with Linh .

`->`

` (-)` G.Khanh and M.Khanh weren't on Sam Son beach with Linh .

`(?)` Are G.Khanh and M.Khanh were on Sam Son beach with Linh?

`2,` My father was good at English when he was at school .

`->`

`(-)` My father wasn't good at English when he was at school .

`(?)` Was your father good at English when he was at school ?

`3,` His brothers were lawyers 3 years ago .

`->`

`(-)` His brothers weren't lawyers 3 years ago .

`(?)` Are his brothers lawyers 3 years ago ?

`4,` My grandfather was 75 years last year .

`->`

`(-)` My grandfather wasn't 75 years last year .

`(?)` Was your grandfather 75 years old last year ?

`5,` It was very cold last month .

`->`

`(-)` It wasn't very cold last month .

`(?)` Was it very cold last month?

Đáp án :

Câu 1:

Thể phủ định : G.Khanh and M.Khanh weren't on Sam Son beach with Linh .

Thể câu hỏi : Are G.Khanh and M.Khanh were on Sam Son beach with Linh?

Câu 2:

Thể phủ định : My father wasn't good at English when he was at school .

Thể câu hỏi :  Was your father good at English when he was at school ?

Câu 3:

Thể phủ định :  brothers weren't lawyers 3 years ago .

Thể câu hỏi : Are his brothers lawyers 3 years ago ?

Câu 4:

Thể phủ định : My grandfather wasn't 75 years last year .

Thể câu hỏi : Was your grandfather 75 years old last year ?

Câu 5

Thể phủ định : It wasn't very cold last month .

Thể câu hỏi : Was it very cold last month?

Giải thích các bước giải :

Áp dụng công thức thì quá khứ đơn dạng tobe

Thể khẳng định : S + was/ were + O

Thể phủ định : S + was/were not + Object/Adj

Thể câu hỏi : Was/Were+ S + Object/Adj?