1. 肯定句:They are going climbing this weekend.
否定句:They aren't going climbing this weekend.
一般疑问句:Are they going climbing this weekend?
肯定回答:Yes, they are.
否定回答:No, they aren't.
2. 肯定句:He is sending an e-mail.
否定句:He isn't sending an e-mail.
一般疑问句:Is he sending an e-mail?
肯定回答:Yes, he is.
否定回答:No, he isn't.
3. 肯定句:She reads newspapers every day.
否定句:She doesn't read newspapers every day.
一般疑问句:Does she read newspapers every day?
肯定回答:Yes, she does.
否定回答:No, she doesn't.
参考资料:原创回答团(第159号会员)