The sick boy-- go to school A.doesn't need B.needn't to C.doesn't need to D.don't need to

问题描述:

The sick boy-- go to school A.doesn't need B.needn't to C.doesn't need to D.don't need to

选c.因为如果将need视为情态动词那么它可以本身来做否定,后接动词原形,可b后面接的是不定式,所以不对.如果将need视为普通动词那么应用助动词否定且后接动词不定式to do ,根据The sick boy是单三,所以只能选C.明白了吗?