把下列各句改成一般过去时，先改成否定句，再改成疑问句并作肯定，否定回答!

Question

1.The match goes well.
2.The sky is blue.
3.She buys a bike.

Answer 1

1.过去时 The matches went well.
否定句 The matches didn't go well.
疑问句 Did the matches go well?
肯定回答 Yes, they did.
否定回答 No, they didn't.
2. 过去时 The sky was blue.
否定句 The sky was not blue.
疑问句 Was the sky blue?
肯定回答 Yes, it was.
否定回答 No, it wasn't.
3.过去时 She bought a bike.
否定句 She didn't buy a bike.
疑问句 Did she buy a bike?
肯定回答 Yes, she did.
否定回答 No, she didn't.