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there was pienty of time ,she ----

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there was pienty of time ,she ----
A;must not have hurried B need not have hurried cmust not hurry D could not have hurried 这是虚拟语气吗 答案为什么是B
嗯,是虚拟语气.
本来还有很多时间的,她大可不必那么着急.
was是虚拟语气提示词哦.因为是过去式.
must必须,must not 禁止,一定不被允许,一定不可能
need 需要,need not没必要
再问: 虚拟语气里有need做助动词吗
再答: 为什么不可以。所有情态助动词都可以放到虚拟语气里用。will(would), shall(should), can(could), may(might), must, need, dare, ought to, used to, had better