"Had taught" is the past perfect tense of teach.
"Had taught" is the past perfect tense of teach.
"Had taught" is the past perfect tense of teach.
Taught is the past tense and past participle of teach. The present perfect tense of teach is have/has taught.I/We/You/They have taughtHe/She/It has taught
The past tense of teach is taught.
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 tense of "teach" is "taught."
The past perfect tense of hope is had hoped.
The past perfect tense is had submitted.
The past perfect tense is had chosen.
The past perfect tense is "had confronted".