No, a thesaurus is use to find synonyms and antonyms. A dictionary shows the past tense form of a verb.
The past tense of "find" is "found."
The past tense of the verb 'am' is 'was' or 'were.' The verb 'am' is derived from the verb 'to be.'
The past tense verb for "do" is "did."
By is not a verb and does not have a past tense. Buy is a verb, and the past tense is bought.
The verb is still "to be", regardless of the tense. It is an irregular verb, and the past tense forms are was for I and he/she/it, and were for we, you, and they.
Found is the past tense of the irregular verb find.
"Shook" is the past tense of the verb, "to shake".
The past tense of the verb to promise is promised.
The past tense of the verb take is took
reside is the verb. Resided is the past tense.
The abbreviation for the past tense verb is "past."
The verb is sailed, and the tense is past tense. The subject is steamer, sailed is what the steamer did, and "yesterday" confirms that it took place in the past.