1.My father bought a computer last year.
否定句：My father didn't buy a computer last year.
一般疑问句：Did your father buy a computer last year?
肯定回答：Yes,he did.
否定回答：No,he didn't.
2.I am practing my English.
否定句：I'm not practicing my Engish.
一般疑问句：Are you practicing your English?
肯定回答：Yes,I am.
否定回答：No,I'm not.
3.We took a taxi to Shanghai yesterday.
否定句：We didn't take a taxi to Shanghai yesterday.
一般疑问句：Did you take a taxi to Shanghai yesterday?
肯定回答：Yes,we did.
否定回答：No,we didn't.The cat was in the room just now. they went to the zoo last sunday 把这两个句子改为否定句和一般疑问句并作肯否回答 谢谢1. The cat wasn't in the room just now.Was the cat in the room just now?Yes, it was.No, it wasn't.2. They didn't go to the zoo last Sunday.Did they go to the zoo last Sunday?Yes, they did.No, they didn't.