介绍:
……
It’s a nice day, isn’t it?
I love you, don’t I?
It’s 3 o’clock, isn’t it?
It doesn’t belong to me, does it?
基本原则：前肯后否，前否后肯，前后时态一致，所使用be\情态动词\助动词一致
特殊情况：
1. 当陈述部分的是I am , 后面的疑问句用aren’t I
2. 当陈述句中有everyone/body, nobody/no one 时，后面疑问句中的主谓应为复数they,有时也用单数he：当陈述句中出现everything, anything, nothing, something时, 附加疑问句中主语用it
3. 当陈述部分有never, seldom, hardly, few, little, nothing时，前否后肯 ；如有unhappy, dislike, unfriendly等含有否定词缀的派生词时，前肯后否：
4. 宾语从句中当主句的主语为第一人称时，其后的简短问句应与从句相一致；宾语从句中当主句的主语为第二、三人称时，其后的简短问句则应与主句相一致（此时，否定只看主句，与从句无关...）
反义疑问句的回答：真相只有一个
实战演练：
1. Few of them hurt themselves in the accident last night, __________?
• (A) don't they (B) didn't they
• (C) did they (D) do they
2. His sister had a bad cough, ________ she?
(A) wasn't (B) doesn't
(C) hadn't (D) didn't
3. Don't smoke in the meeting room, ________?
(A) do you (B) will you (C) can you (D) could you
4. Nothing is difficult in the world if you put your heart into it, _________?
(A) aren't they (B) are they (C) isn't it (D) is it
