看看下面：
1.He can come now.
Q:Can he come now?这是正式疑问句,但是如果要用反问句,可以用简单回答：“Can’t he?” 以下的其它问题也一样.
N:He can't come now.
2.There is a newspaper on the desk.
Q:Is there a newspaper on the desk?
N:There isn't a newspaper on the desk.
3.He wants a new car.
Q:Does he want a new car?（原来的答案不对,要注意）
N:He doesn't want a new car.（原来的答案不对,要注意）
4.He is going to come now.
Q:Is he going to come now?
N:He isn't going to come now.
5.They like ice cream.
Q:Do they like ice cream?（原来的答案不对,要注意）
N:They don't like ice cream.
6.He comes from Germany.
Q:Does come from Germany?（原来的答案不对,要注意）
N:He doesn't come from Germany.（原来的答案不对,要注意）
7.They must go home now.
Q:Must they go home now?（原来的答案不对,要注意）
N:They mustn't go home now.（原来的答案不对,要注意）
8.He feels ill.
Q:Does he feel ill?（原来的答案不对,要注意）
N:He doesn't feel ill.（原来的答案不对,要注意）
9.He has a headache.
Q:Has he a headache?
N:He hasn't a headache.
10.He cleaned his shoes.
Q:Did he clean his shoes?（原来的答案不对,要注意）
N:He didn't clean his shoes.（原来的答案不对,要注意）