My family (visit) visited St Petersburg last September. We (go) there

My family visited St Petersburg last September.

We went there by plane.

Our trip began.

The sentences are in Past Indefinite. Past Indefinite is used for past actions. Past Indefinite is formed with the help of the suffix ed for regular verbs. (To look looked, to visit visited). We use the second form of irregular verbs for Past Indefinite. (to go went, to begin began).

Negative is formed did + not + verb (infinitive).

My family did not visit St Petersburg last September.

We did not go there by plane.

Our trip didnt begin.

Interrogative is formed Did + subject + verb (infinitive).

Did my family visit St Petersburg last September?

Did we go there by plane?

Did our trip begin?