作业帮need何时作情态何时做实意动词?何时作情态何时做实意动词need即可用作情态动词,又可做实意动词,need+v原 为情态动词,need+名词,to do,doing为实意动词,那么到底何时作情态何时做实意动词呢?如
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need何时作情态何时做实意动词?何时作情态何时做实意动词need即可用作情态动词,又可做实意动词,need+v原 为情态动词,need+名词,to do,doing为实意动词,那么到底何时作情态何时做实意动词呢?如
need何时作情态何时做实意动词?何时作情态何时做实意动词
need即可用作情态动词,又可做实意动词,need+v原 为情态动词,need+名词,to do,doing为实意动词,那么到底何时作情态何时做实意动词呢?如何判断?
need何时作情态何时做实意动词?何时作情态何时做实意动词need即可用作情态动词,又可做实意动词,need+v原 为情态动词,need+名词,to do,doing为实意动词,那么到底何时作情态何时做实意动词呢?如
need 作为及物动词后面可跟名词或代词,动名词（含有被动以为,相当于不定时的被动）
做情态动词时后接动词原形
做选择题时既可用情态动词又可当实义动词,选项中肯定只有一个正确答案
1.做情态动词时，仅用于否定句和疑问句，只有现在时，过去式要用needn't have，疑问式用need+人称?,否定式用need not(即needn't），如：
（1）——Need we leave soon?
——Yes,you must.(No,you needn't)
(2)You needn't have hurried(=It was ...
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1.做情态动词时，仅用于否定句和疑问句，只有现在时，过去式要用needn't have，疑问式用need+人称?,否定式用need not(即needn't），如：
（1）——Need we leave soon?
——Yes,you must.(No,you needn't)
(2)You needn't have hurried(=It was not necessary for you to hurry,
but you did).你当时不必这么匆忙。
2.做实义动词时，其变化与一般的实义动词相同，后接带to的不定式（need doing = need to be done ）,过去式用needed、did you need?和didn't need,肯定式用needs/needed/need,疑问式用do、does、did提问，否定式要在前面加
don't、doesn't、didn't,如：
(1)A job like nursing needs patience and understanding.(need+名词，
need understanding = need to be understood,需要被理解）
(2)He needs to see a doctor.(need to do)
(3)Do you still need volunteers to help clean up after the party?
(need somebody to do something)
(4)They didn't need to start so early.(do not need to do)
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