英语need should must have to
need
should
must
have to
它们各自的意思,用法,区别.
人气：149 ℃ 时间：2019-10-11 16:17:02
解答
should,must,need,都是情态动词,后面都只能跟动词原形,分别解释为应该,必须,需要.其中need可分为两类：一、need do,否定形式为needn'tdo,肯定回答为Yes,I need.否定回答为No,I needn't.二、need to do,否定形式为d...
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