need的用法是什么
发布时间:2025-10-06 | 来源:互联网转载和整理
need作为动词,有两种理解,一是做情态动词,二是做行为动词。\x0d\x0a1)need作为情态动词时,一般不用于肯定句,只用于否定句/疑问句。\x0d\x0a其后直接加动词原形,没有时态/人称的变化。\x0d\x0a其否定句为在need后面直接加not,或使用缩写needn't.\x0d\x0a如:Ineedn'tworkhard.\x0d\x0a其疑问句必须把情态动词need提前,回答也一般借助于need.\x0d\x0a如:NeedIhelpyou?\x0d\x0a2)need作为行为动词时,可用于各种句子,有过去式needed和三单形式needs.\x0d\x0a其否定句必须借助于助动词don't/doesn't/didn't等变化。\x0d\x0a如:Idon'tneedtoworkhard.\x0d\x0a其疑问句也必须借助于助动词do/does/did等变化。\x0d\x0a如:Whatdoyouneedmetodo?\x0d\x0a其结构一般有:\x0d\x0aneed***/sth如:Ineedyou.Ineedyourhelp.\x0d\x0aneedtodosth如:Ineedtoworkharder.\x0d\x0aneed***todosth如:Ineedyoutohelpme.\x0d\x0aneeddoing=needtobedone如:Mywatchneedsrepairing.=Mywatchneedstoberepaired
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