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 I 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 I known David for ten years?

1) He hasn’t lived here for three years. Phủ định