Departed is the past tense of depart.
Departure is not a verb and does not have a past tense. Depart is a verb, and the past tense is departed.
Will depart.
Departure is a noun not a verb. "Depart" is a verb, and the future tense is will depart or shall depart.
The correct grammar is "had departed." This is because "departed" is the past participle form of the verb "depart," and when using the past perfect tense, we need to use the auxiliary verb "had" followed by the past participle form.
The past participle of depart is "departed."
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 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". The past tense of "to be" is "was" or "were".