You can simply say thank you in the past tense, such as:
Thank you for your letter dated...
I am very grateful for your help on . . . , thank you.
Please accept my belated thank you (explain why its late)
The past tense of "thank you" is "thanked."
The past tense of "thank" is "thanked."
Thanked. Or Have thanked.
The past tense and past participle are both "thanked".
The past tense form for wear is wore. Wear is present and wore is past. thank you.
the past tense of am is was and the past tense of has is had
The past tense of "thank" is "thanked."
The past tense and past participle are both "thanked".
thanked
Thanked. Or Have thanked.
The past tense form for wear is wore. Wear is present and wore is past. thank you.
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" and the past tense of "be" is "was" or "were" depending on the subject (singular or plural).
Wrote is past tense. It is the past tense of write.Wrote is already a past tense.
The past tense of "finish" is "finished". The past tense of "be" is "was" (singular) or "were" (plural).
The past tense is schooled. The past continuous tense is 'was/were schooling'.