Question

write the affirmative structure of tenses.

Answer 1

subject +helping verb + main verb + object

Answer 2

Heyaa folk,

subject + verb (v1, v2, v3) + main verb + object + OW (other words)

For example,
V1 : Go.
V2 : Went.
V3 : Gone.

This is the structure used for affirmative sentences.

Hope it helps u :)