Question

change a-t-il une bicyclette? to negative sentence​

Answer 1

Answer:

il n'a pas une bicyclette

Explanation:

we use ne+ verb+ pas to make a negative sentence

*n' ne and a are vowels clashing.

This sentence is interrogative

we will rearrange it as affirmative and make it negative.

Il n'a pas une bicylette.

Answer 2

Answer:

n'a-t-il pas une bicyclette?

Explanation:

since it is interrogative, you should negate the verb (avoir - a ) in the question itself with ne pas. since e and a from ne a clash as vowels, we use n'