`1.` `(-)` He hasn't lived here for three years.

      `(?)` Has he lived here for three years?

`2.` `(+)` We have been here for two weeks.

      `(?)` Have we been here for two weeks?

`3.` `(+)` They have missed the train.

      `(-)` They haven't missed the train.

`4.` `(-)` I haven't had breakfast this morning.

      `(?)` Have you had breakfast this morning?

`5.` `(+)` She has passed the exam. 

      `(?)` Has she passed the exam?

`6.` `(+)` You have met his mother.

      `(-)` You haven't met his mother.

`7.` `(-)` We haven't eaten too much chocolate. 

      `(?)` Have we eaten too much chocolate?

`8.` `(+)` I have known David for ten years.

      `(?)` Have you known David for ten years?

`9.` `(+)` She has read the book.

      `(-)` She hasn't read the book.

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`+` Cấu trúc thì Hiện tại hoàn thành:

`(+)`  Khẳng định: S + have/has + Ved/V3

`(-)` Phủ định: S + have/has + not + Ved/V3

`(?)` Nghi Vấn:  Have/has + S + Ved/V3....?