Question

I (GO) to the theatre yesterday evening

Answer 1

1. I went to the theatre yesterday evening.

2. I was going to the theatre yesterday evening.

Answer 2

It seems that you are trying to express an action that took place in the past. However, the sentence you have provided contains a minor error in grammar. Here is a corrected version of your sentence:

"I went to the theatre yesterday evening."

In this sentence, "went" is the past tense of the verb "go" which correctly indicates that the action happened in the past.