There is no past tense for the word "company," because company is a noun. Only verbs have a past tense.
founded a company. it isn't that hard
'sold' is already past tense. Present tense is 'sell'.
The past tense of sell is sold.
The word partnership does not have a past tense as it is a noun and not a verb. The past tense of the verb form 'partner' is partnered.
The past participle is sold.
I had work in company
founded a company. it isn't that hard
The past tense is managed. For example:He managed a company.He has managed a company.He had managed a company before.
the past tense of am is was and the past tense of has is had
The past tense of get is got. For isn't a verb and so doesn't have a past tense. The past tense of has is had. Had is already the past tense. 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
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 "have" is "had."
The past tense of "am" is "was" and the past perfect tense of "has" is "had."
Past tense I had Present tense I have Future Tense I will have
was is the past tense of am eg. 'I am' (now) but 'I was' (is past)