01. Well, "had" is the past tense of the verb "have", but I think you're asking specifically about its use as an auxiliary to form the past perfect tense of other verbs:02br 02br 01i 00I played02i 00 -- simple past tense02br 02br 01i 00I 01b 00have02b 00 played02i 00 -- present perfect tense02br 02br 01i 00I 01b 00had02b 00 played02i 00 -- past perfect (or pluperfect) tense02br 02br 00So, even though "have" on its own is present tense, it forms a past tense with other verbs. If you do a Google search for these tense names then you will find tons of information on their uses.
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