1、反意疑问句的陈述部分如果是肯定，附加的一般疑问句就用否定形式；如果陈述部分是否定，则附加部分用肯定形式。

　 (我们可以这样记忆这条规则：前肯后否，前否后肯)

　　 如：This is a book, isn’t it?

　 　This is not a book, is it?

　　 You can speak some English, can’t you?

　　 You can’t speak any English, can you?

18. None of the answers _______ (be) right.　 is/are　

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17. My telephone number ______ (be) 3366222.　 is

16. Twenty minutes _______　 (be) not enough for me to do so much work.　　 is

15. How much _______ (be) one and three?　　 is

14. Having enough sleep ______ (be) is very important for us.　　 is

13. What I know about him _______　 (be) that he is from Jiangxi.　　 is

12. The great politician and militarist (军事家)_____ (be) warmly welcome by the people in his hometown.　 was

11. There ______ (be) some good news for you.　　　　 is

10. There _____ (be ) some boys playing football on the playground.　　　 are