Anonymous:
Hai this is Nivitha ,can any one tell diff between has have had with example...............

i can't understand

i have sent mail

i had sent mail

i has ...............
Hi,

In your example, "has" and "have" are both in the same time frame, or "tense." The mail has been sent in the recent past.

This tense is called "present perfect." "Perfect" means the action is complete. It was completed just recently.

The difference between "have" and "has" only concerns the actor. I have sent; We have sent; you have sent; He, She, It has sent; They have sent. "He has sent" is called third person singular.

"Had" is past perfect tense, and works for all actors (persons.) The action was completed prior to some event in the simple past.

"I had sent mail before I received his change of address.

These "perfect" tenses are a bit more special than the "simple" tenses:

"simple present" I send mail. He sends mail.

"simple past" I sent mail. He sent mail.

"simple future" I will send mail. He will send mail.

"Have" is also used in the "future perfect tense": I will have sent mail. He will have sent mail. This action will have been completed before some simple future action. "John will go on vacation next week. He will have sent mail before leaving."

In your examples, "have," "has," and "had" are called auxilliary verbs, or helping verbs. However, they also work as simple present and simple past of the verb "to have." I have mail. He has mail. I had mail yesterday. He had mail yesterday.

Best regards, - A.
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Anonymous:
thanks for ur examples.
srinivas
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