1.we didn't go to the part last Sunday.
2.i didn't play basketball yesterday.
3.My mother didn't watch Tv last night.
4.My father didn't buy me a pen last week.
I wasn't happy yesterday.
都只是对一般过去式陈述句的否定.就是借助于助动词,did,was 或者were加上not,将其后的动词变为原形即可.
疑问句：
1.Did we go to the part last Sunday?
2.Did you play basketball yesterday?
3.Did my mother watch Tv last night?
4.Did my father buy me a pen last week?
5.was you happy yesterday?