Past Simple Questions Formation
Step 1: Identify the main verb
They
sang
songs.
Step 2: Add 'did' and change verb to base form
Did
they
sing
songs?
Formula:
Did + Subject + Base Verb (V1) + Rest?
Statement
Question
He wrote a letter.
Did he write a letter?
They had dinner.
Did they have dinner?
She ran fast.
Did she run fast?