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need not 和do not need 为什么可以说She need notspend much money?不是need to do

题目详情
need not 和do not need 为什么可以说She need notspend much money?不是need to do
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答案和解析
need not 和do not need 有区别,前者need是情态动词,用法和can, must, may 等一样,其后直接加动词原形,否定形式在其后加not;后者need是实意动词,用法和go ,come,read等一样,其否定形式需要在其前面加助动词don't 或doesn't.She need not spend much money?=She doesn't need to spend much money?