May I take this book out of the reading room?No,you _____.You must obey the rules.A can"t B may not C needn"t D aren"t

问题描述:

May I take this book out of the reading room?No,you _____.You must obey the rules.
A can"t B may not C needn"t D aren"t

肯定是A了,先用排除法,C D选项的意思就不对了,一个是不需要,一个不是xx。再看A B A 是不能 B是不允许,咋一看题目似乎B更符合一些,但是结合英语的用语习惯,一般不会用may not这种词组来回答问题的。can 能的意思 may 允许的意思

A can"t, 用在第二人称表示不允许,禁止

A can't 习惯用语,而且和后面的must形成语气呼应,彼此协调.