"Already left".
Left is already in the past tense. It's the past tense of leave.
"Had left" is the past perfect tense of leave.
Already is not a verb and does not have a past tense.
Present tense: leave Past tense: left Future tense: will leave
Left is the past tense and past participle of leave.
"Leave" is the present tense; "left" is the past tense and past participle.
"I was" is already in the past tense. "I am" is present tense.
Did not do it -> did not do it (same past tense form)
Wrote is past tense. It is the past tense of write.Wrote is already a past tense.
Could is already the past tense. It is the past tense of the verb "can".
Already is not a verb, so it does not have a past perfect tense.
Wore is already past tense.