"Announce" is a regular verb, and the past tense is "announced." For example: The president announced that he will take a trip to Canada next month.
Past tense - announced. Present tense - I/you/we/they announce. He/she/it announces.
Simple past tense - announced Simple present tense - announce/announces Simple future tense - will announce
The future tense of announce is will announce.
"Will have announced" is the future perfect tense of announce.
Announce is the past participle of announce.
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense of "she do" is "she did."
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would" and the past tense of "be" is "was" or "were" depending on the subject (singular or plural).