第1个回答 2011-09-22
This isn't my book. ( 否定句 is not = isn't )
一般疑问句 : Is this your book?
肯定回答; Yes, it is.
否定回答: No, it isn't.
有问题尽管问我哟!i祝你学习进步,更上一层楼,快乐每一天! (*^__^*)
第2个回答 2011-09-22
this is not my book. be 后加not构成否定
is this your book? be提前构成一般疑问句
yes, it is. No, it isn't.
第3个回答 2011-09-22
This is not my book.
Is this your book?
Yes, it's my book.
No, it's not my book.
第4个回答 2011-09-22
This is not my book.
Is this your book?
Yes, it's my book.
No, it's not my book.