Question

we have plenty of time,isn't it?.....what ia wrong in the sentence?

Answer 1

The question tag is wrong. Most people might think that right tag is haven't because of the rules. But the right tag is don't.
Hence the correct sentence is -
We have plenty of time, don't we?

Answer 2

We have plenty of time, don't we?

Explanation:

The mistake in this sentence is that it says 'isn't it' instead of 'don't we', which is grammatically wrong since it doesn't satisfy the subject-verb agreement. The interrogative words need to be in accordance with the subject.

In this case, the subject is 'we', which is a first-person plural pronoun. The appropriate interrogative words would be 'don't we', since it is plural and address people instead of objects, like 'isn't it' does.