Question

can any one tell me why we use "HAD HAD" two times in a single clause?​

Answer 1

Answer:

It is used as the past perfect tense of have. Which means something which was already completed in the past.

Explanation:

Take the sentence as He had had his dinner

“Had had” is the past perfect tense of “have.” We use the past perfect tense when we need to indicate that something occurred before another previous event.