- Câu phủ định: 

                         + She hasn't written to me for nearly a month. 

                         + They haven't eaten carviar. 

                         + His mother hasn't drunk  wine and beer. 

- Câu nghi vấn: 

                         + Have you ever been to China?

                         + Has he ever smoked? 

                         + Have you ever been to England? 

(-)

- They Haven't lived here for years.

- Tim has not done his homework yet.

- We haven't seen her today.

(?)

- What have you done to my bag?

- How long has she been here?

- who has you talked with so far?