Prepare is the present tense of prepared.
The present tense of 'teacher prepared exams' is 'teacher prepares exams'.
I have prepared.
This is a present continuous passive verb phrase.The meal is being prepared now.
Prepared is a past tense already, but if it's being used as an adjective, then it is was prepared.
The verb is is the present tense.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have
No, it is not a conjunction. It is a verb: the present perfect tense, third person singular conjugation of the verb to prepare.
"Has" is in present tense. The past tense is "had".
No 'is' is present tense. am/is/are = present tense was/were = past tense
Present tense