Also is an adverb and does not affect the verb tense. The past perfect tense of think is had thought.
The past perfect tense is had chosen.
Had believed is in the past perfect tense. It is used to indicate an action that was completed before another action in the past.
No, it's a Past Tense or a (Past) Participle.
The past tense of "he thinks it's worthless" is "he thought it was worthless."
Present perfect - have/has thought. Past perfect - had thought. Future perfect - will have thought.
The past perfect tense of thing is had thought.
The past perfect tense is "had thought"
For the verb to think, the two are the same.The past tense is thought. The past participle is thought.Past: He thought about leaving.Past Perfect: He had thought about leaving.
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.
The past perfect tense of hope is had hoped.
The past perfect tense is had set.
The past perfect tense is had submitted.
The past perfect tense is "had confronted".
The past perfect tense is had rung.
The past perfect tense is had burned.