I'm a bit confused about the use of the determinative article before "time". I know the rule is to not use the article when you talk about thinks in general. So if I say:

do you have time to do it?

since this is a specific time, that is the time to do something, it should be more correct to say:

do you have the time do to it?

Yet, the first version is used. Why? Just an exception to the general rule?

I'm a bit confused about the use of the determinative article before "time". I know the rule is to not use the article when you talk about thinks in general. So if I say:

do you have time to do it?

since this is a specific time, that is the time to do something, it should be more correct to say:

do you have the time do to it?

Yet, the former version is used too. Why? Just an exception to the general rule? And what about:

have you got time to do it? have you got the time to do it?