didn`t need to do 和need not to do区别

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didn`t need to do 和need not to do区别
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didn`t need to do 和need not to do区别
didn`t need to do 和need not to do区别

didn`t need to do 和need not to do区别
need既可作实意动词,又可做情态动词.做实意动词时,否定don't need to 情态动词时,相当于can之类的,否定need not do

need既可作实意动词,又可做情态动词。做实意动词时,否定don't need to 情态动词时,相当于can之类的,否定need not do