`1.` `(-)` Peter doesn't usually watches TV everyday.

      `(?)` Does Peter usually watches TV everyday?

`2.` `(-)` The boys aren't very strong.

      `(?)` Are The boys very strong?

     `(?)` Did Phong swim in the sea last Summer?

`3.` `(-)` There weren't a lot of people at the meeting.

     `(?)` Were there a lot of people at the meeting?

`4.` `(-)` My father didn't work late yesterday evening. 

      `(?)` Did My father work late yesterday evening?

`5.` `(-)` Phong didn't swim in the sea last Summer.

     `(?)` Did Phong swim in the sea last Summer?

`6.` `(-)` They will not play football on Sports Day.

     `(?)` Will They play football on Sports Day?

`7.` `(-)` I’m not going to visit Ha LongBay tomorrow.

      `(?)` Are you going to visit Ha LongBay tomorrow?

`8.` `(-)` Mai can't sing very well.

      `(?)` Can Mai sing very well?

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`+` Cấu trúc thì Quá khứ đơn:

`(+)` S + Ved/V2

`(-)` S + didn't + V_inf

`(?)` Did + S + V_inf...?

`+` Cấu trúc thì Tương lai đơn:

`(+)` S + will + V_inf

`(-)` S + will + not + V_inf

`(?)` Will + S + V_inf...?

`+` Thì Hiện tại đơn:

`(+)` S + Vs/es

`(-)` S + do/does + not + V_inf

`(?)` Does/Do + S + V_inf...?

`+` Cấu trúc thì Tương lai Gần:

`(+)` S + am/is/are + going to + V_inf

`(-)` S + am/is/are + not + going to + V_inf

`(?)` Am/is/are + S + going to + V_inf...?