Question

the structure of simple past tense?

Answer 1

see the structure of the simple past.

Affirmative:
subject + verb (in past form) + complement.

example: I saw a movie yesterday

Negative:
subject + auxiliary verb (did) + negacion + verb (infinitive) + complement.

example: He didn’t hear the telephone.

Interrogative.
auxiliary verb (did) + subject + verb (infinitive) + complement?.

example: Did you have dinner last night?

Answer 2

Sub+verb 2nd form + object
I played cricket
here I is subject
played -action verb in 2nd form