"Has collected" is the present perfect tense of "collect" used for third person singular subjects.
If you meant what is collect in past tense, It is collected.
The past perfect tense is had collected.
The past tense of collect is collected.
No, it's present tense. The past tense would be "The barrel collected rainwater"
Collect is present tense.
"Has collected" is Present Perfect, because an auxiliary verb "to have" is in the present tense.
Present perfect is formed with --- have/has + past participle.Because collect is a regular verb the past participle is verb + -ed = collected.So present perfect is have collected or has collected egHe has collected his pay.They have collected the rubbish early today.
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
the past tense of am is was and the past tense of has is had
The past tense of get is got. For isn't a verb and so doesn't have a past tense. The past tense of has is had. Had is already the past tense. The past tense of have is had.
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
HAD is the Past Tense of TO HAVE.