infinitive: ride
past: rode
past participle: ridden
past perfect: had + past participle (had ridden is the past perfect tense of ride)
Rode is the past tense of ride. Ridden is the past participle. I rode a horse yesterday. (past tense) He has ridden a horse before. (present perfect tense)
The future perfect form of the verb to ride is will have ridden. Will have is the future tense of the auxiliary verb have, and ridden is the past participle of the main verb ride.
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 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.