The past perfect is formed with - had + past participle.
The past participle of swear is sworn. So past perfect of swear is:
had sworn
I had sworn to revenge the death of my cat.
Swore is the past tense of swear. The past perfect tense of swear is had sworn.
The present perfect tense of "swear" is "have/has sworn."
The past tense of "swear" is "swore" and the past participle is "sworn."
Existed is the past tense. The past perfect tense is had existed.
The past tense of "bleed" is "bled." The past perfect tense of "bleed" is "had bled."
Swore is the past tense of swear. The past perfect tense of swear is had sworn.
The past tense of swear is swore.
The past tense of "swear" is "swore" and the past participle is "sworn."
Existed is the past tense. The past perfect tense is had existed.
"Sworn" and "swore" are both the past tense form of the verb "to swear".
The past perfect tense of hope is had hoped.
The past tense of "bleed" is "bled." The past perfect tense of "bleed" is "had bled."
The past tense of sit is sat; the past perfect tense is had sat.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
The past perfect tense of 'get' is 'had gotten'
Perfected is the past tense of perfect.
"Had been" is the past perfect tense of be.