The present perfect tense of build is have/has built.
I/We/You/They have built
He/She/It has built
The present perfect tense of build is:I/You/We/They have built.He/She/It has built.
will have built
Past perfect is formed with had + past participle.The past participle of build is built. So the past perfect is had built.I had built the house ten years before the earthquake.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
Past perfect tense - I had dug. Present perfect tense - I have dug. Future perfect tense - I will have dug.
Present Tense, Paste Tense, Future Tense, Future Perfect Tense, Present Perfect Tense, Past Perfect Tense
Past perfect tense, past perfect continuous tense, present perfect tense, present perfect continuous tense, future perfect tense and future perfect continuous tense.
Present perfect tense - have/has gone. Present perfect continuous tense - have/has been going. Past perfect tense - had gone. Past perfect continuous tense - had been going. Future perfect tense - will have gone. Future perfect continuous tense - will have been going.
The tense that uses "had" is the past perfect tense, while the tense that uses "have" is the present perfect tense.
Was is a past tense conjugation of be. The present perfect tense of be is have/has been.I/We/You/They have beenHe/She/It has been
Existed is the past tense. The past perfect tense is had existed.
The past perfect tense is "had confronted".