It's careless of him to lose his new bike,____ _____?这种句型有什么特殊用法吗?

问题描述:

It's careless of him to lose his new bike,____ _____?这种句型有什么特殊用法吗?
要有说服力的!

It's careless of him to lose his new bike,isn' t he \x0c It's not careless of him to lose hisnew bike,is he \x0c前肯后否,前否后肯,若有否定型形容词,还应是后否.