Simple past tense
sub+v^2+obj
Sub+did not+v1+obj
Did+sub+v1+obj?
Wh+did+sub+v1+ obj?
obj+was/were+V3+by+sub
The simple past is used:
- To denote completed/finished event or situation with a last time reference
- To express past facts or generalizations or situations which are no longer true
- A series of completed action in the past
- Duration of any completed action Which starts and stops in the past.
- With adverbs of time:
yesterday,ago,last week, last month,just now,in the past etc..
- With when clause(before event)
Hope it helps
Good luck on your assignment