If "perfect" means "past" as in Past Tense, that is WAS/WERE. If you mean "Present Perfect", it's HAVE/HAS BEEN.
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
The perfect tense of the verb "dig" is "have dug" or "has dug."
Present Tense, Paste Tense, Future Tense, Future Perfect Tense, Present Perfect Tense, Past Perfect Tense
The 6 forms of perfect tenses are: present perfect, past perfect, future perfect, present perfect continuous, past perfect continuous, and future perfect continuous.
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 perfect tense of "think" is "have thought." For example, "I have thought about it before."
The past perfect tense of hope is had hoped.
The present perfect tense of "hid" is "have/has hidden."
The future perfect tense of "know" is "will have known."
The past perfect tense of "submit" is "had submitted."
The future perfect tense of "give" is "will have given."
The past perfect tense of "confront" is "had confronted."