第1个回答 2011-10-28
This is my finger.
This is not my finger.
Is this your finger?
Isn't this your finger?本回答被提问者采纳
第2个回答 2011-10-27
This is my big dog.
Is this your big dog?
This is not my big dog.
第3个回答 2011-10-27
This is a book.
This is not a book.
Is this a book.
Isn't this a book.
第4个回答 2011-10-27
This is my book.
This book is mine.
第5个回答 2011-10-27
Is this the car for sale?
是这辆车在促销么?