1.When I got home,my mother had cooked dinner.(改为否定句)
When I got home,my mother ( hadn't cooked ) dinner.
2.The train had left when Jim got to the station.(改为一般疑问句并作否定回答)
(Had ) the train (left) when Jim go to the station?No,it hadn't.
3.I was late for school because my alarm clock didn’t go off.(对划线部分提问)
____Why____ _ ____were______ you late for school?
4.The box is so heavy for him that he can’t carry it.(改为同义句)
The box is too heavy for him to carry.
5.Both my mother and my father like swimming.(改为否定句)
___Neither____ my mother ___nor_____ my father is swimming.