Yes, man is present tense. Manned is past tense.
Men is the plural form of man. Man/men are nouns and nouns don't show tense. Look at these sentences: The men eat rice everyday. -- present tense The men ate rice yesterday. -- past tense The men will eat rice tomorrow - future tense Notice how the word man doesn't change it is the same in the present tense and the past tense, that's because man/men doesn't show tense.
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
"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
the present of did is didnt Do is the present tense of did. Didn't is the past negative form
Creep is present tense. The past tense is crept.
Should is present tense.
"Has" is the present tense form of the verb "have." The past tense form of "has" is "had."