The past perfect tense is had added.
The past tense of add is added.
The past perfect tense follows this structure:Subject + Auxiliary Verb "have" (had) + Past Participlee.g. I had finished my homework.
Simple is not a verb therefore it doesn't have a past tense. The past of perfect is perfected
The future perfect tense refers to the past in the future. E.g. I will have finished.
The formula for the present perfect tense is: has/have + past participle. To make it negative, add the adverb not.Examples:I have not walkedWe have not walkedYou have not walkedHe/she has not walkedThey have not walked
Existed is the past tense. The past perfect tense is had existed.
The past tense is bled, and the past perfect tense is had bled.
The past tense of sit is sat; the past perfect tense is had sat.
need is a regular verb so you add -ed to make past tense - needed.the past participle of need is also neededPast perfect is had + past participle.I had needed a new computer and Santa gave me one!
The past perfect tense is "had confronted".
The past perfect tense is had chosen.
The past perfect tense is had burned.
The past perfect tense is had set.
The past perfect tense is had rung.
The past perfect tense of hope is had hoped.
The past perfect tense is had submitted.
The past perfect tense of "learn" is "had learned."