谁能给我讲一些过去式的句型啊？不胜感激

谓语动词在肯定句中用动词过去式
如；I was in Grade 1 last yeat.
I wasn't in Grade 1 last year.
Were you in grade 1 last year?
He went to beijing last week.
He didn't go to Beijing last week.
Did you go to Beijing last year?
What did you do yesterday?
过去式有规则变化和不规则变化。
I watched TV yesterday.
Did you watch TV yesterday?
I didn't watch Tv yesterday.