Philosophy is a noun. Nouns don't have tenses. Perhaps you meant, "What is the past tense of philosophize?" ==> Philosophized.
The past perfect tense is had chosen.
No, it's a Past Tense or a (Past) Participle.
Had believed is in the past perfect tense. It is used to indicate an action that was completed before another action in the past.
Also is an adverb and does not affect the verb tense. The past perfect tense of think is had thought.
No. The word "bliss" is a noun and so can't have a past tense. Only verbs have tenses.
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense is she did.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
HAD is the Past Tense of TO HAVE.
The past tense of "you will not" is "you would not."
The past tense of "am" is "was" and the past perfect tense of "has" is "had."
The past tense is had.
Past tense I had Present tense I have Future Tense I will have