Ответ:
- I have got a ruler.
- I have got a green ruler.
- I have got a nice green ruler.
- I have got green rulers.
- Have you got a pencil?
- Have you got a red pencil?
- Have you got a long red pencil?
- Have you got a book?
- Have you got an English book?
- Have you got English books?
- Have you got a Russian book?
- Have you got an interesting Russian book?
- They are singers. I am a singer too.
- Are you a good singer?
- I would like to be a dancer.
Артикль a употребляется перед исчисляемым существительным в единственном числе, а an — перед гласным звуком; перед существительными во множественном числе артикль не ставится.
