didn't have/haven't had time

I didn't have time.
I haven't have had time.

Hello, Antwn—and welcome to English Forums.

It is the normal difference between simple past and present perfect. Read this thread from our FAQs:

Can we use did have in this tenses

AnonymousCan we use did have in this tense?

Yes, if you wish to be emphatic in challenging a denial.

I havent hve time is wrong we cnt use two helping verb in one

AnonymousI havent hve time is wrong we cnt use two helping verb in one

But the second "have" is not a helping verb. It is the main verb. Since the first "have" is the helping verb, it has to be followed by the past participle of the main verb. So the correct combination is "have + had."

Actually I liked your answer, the first thing I thought was exactly your answer. Second Have is the main verb, the tense is past perfect so you use have as an auxilliary and had as the main verb in past participle.

Anonymous Actually I liked your answer, the first thing I thought was exactly your answer. Second Have is the main verb, the tense is past perfect so you use have as an auxilliary and had as the main verb in past participle.

The tense is present perfect, not past perfect. Past perfect is "had had." eg.

He had had six or seven beers before he t

One is the past ("I didnt have time") and one is the future ("I haven't the time").

Anonymousone is the future ("I haven't the time").

Not exactly.
I haven't the time. (present)
I won't have the time. (Future)

The difference is the first sentence makes sense. The second one should probably be: "I haven't had time." The latter suggest that you may still get time. where the first one implies that there wasn't time at all.