refer
1. (-) He doesn't go to the cinema.
(?) Does he go to the cinema.
2. (+) James likes strawberry.
(?) Does James like strawberry ?
3. (+) They work in this software company.
(-) They don't work in this software company.
4. (-) His new trousers aren't black.
(?) Are his new trousers black ?
5. (+) She wants to quit the job.
(-) She doesn't want to quit the job.