Past perfect is formed with had + past participle.
The past participle of build is built. So the past perfect is had built.
I had built the house ten years before the earthquake.
The simple past tense of the verb "know" is "knew."
The simple past tense is had.
The simple past tense of 'be' is 'was' and 'were'
The simple past tense of the verb "wear" is "wore."
The simple past tense of the verb "think" is "thought."
The simple past tense of the verb "bring" is "brought."
The simple past tense for the verb "fall" is "fell".
Yes, was is a verb ; the simple past tense of is.
The simple past tense is 'rang'.
Build is the present tense of the verb "to build". Built is the past tense of the verb "to build".
The simple past tense of the verb to be: was and were Examples: I was ill yesterday. You were not at school yesterday.
The simple past tense of the verb "blow" is "blew."