写出下列一般疑问句的两种回答.1． Is this your book?2． Are you having lunch?3． Are they under

一般疑问句大多是什么开头什么结尾,前面是no,后面就加上not的缩写n't就可以了.be动词随着人称变化,人称：你变我,我变你,他不变.
1.Yes,it is.No,it isn't.
2.yes,I am.No,I amn't.
3.Yes,they are.No,they aren't.