很高兴能够在这里回答你的问题：
He(watched tv)last weekend.
否定句
He didn't watch tv last weekend..
一般疑问句
Did he watch tv last weekend?
肯/否回答
Yes,he did./ No,he didn't
对括号内提问：
What did he do last weekend?
They (went swimming)(last sunday)
否定句
They didn't go swimming last sunday.
一般疑问句
Did they go swimming last sunday?
肯/否回答
Yes,they did./ No,they didn't.
对括号内提问：
What diid they do last sunday?
When did they go swimming?