The past perfect tense of thing is had thought.
The past perfect tense is "had thought"
The past tense of "think" would be "thought".
The simple past tense of the verb "think" is "thought."
The past tense of "think" is "thought."
The past tense for "think" is "thought".
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 thought"
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.
The past perfect tense is had chosen.