need+not+to+be+left

@甄杰3118:didnot need to do与 neednot have done 的区别 -
逄胖18975108139…… didn't need to do里need是普通动词,就是need本来的意思,(过去)没必要/不需要做某事 need not have done 里need是情态动词,意思是本来无必要做某事(却做了),本不该做某事 例如:He did not need to come early, so he came late.他不需要早来,所以他来得晚.He needn't have come early, but he did and waited one hour.他不需要早来却早来了,还等了一个小时.

@甄杰3118:need的用法 -
逄胖18975108139…… 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...

@甄杰3118:need+to be done和need +doing的区别 -
逄胖18975108139…… need to be done和need doing的区别为:结构不同、用法不同、侧重点不同. 一、结构不同 1.need to be done 解析:实意动词+介词+助动词+动词现在分词. 2.need doing 解析:实意动词+动名词. 二、用法不同 1.need to be done 用法:...

@甄杰3118:need的 用法 -
逄胖18975108139…… need 是需要的意思.它可以作情态动词也可以作实义动词.所以"我们不需要书"既可以用"don't need"来表达,也可以用"need't"来表达: We don't need any books. 或 We need't have any books.

@甄杰3118:need do need to do need doing有什么区别吗,别讲的太深 -
逄胖18975108139…… need do中的need为情态动词,此时的need没有人称、数以及时态的变化,且通常用于疑问句和否定句中.例如:Need you go right away? 你需要马上动身吗?We needn't finish our homework in one day. 我们不必一天内就做完作业. need to ...

@甄杰3118:need 后接 动词什么形式 -
逄胖18975108139…… 当need为情态动词时,后直接加动词原形 陈述句式:主语+need+v/原形 eg: I need water the flowers. 否定形式:主语+needn't+v/原形 eg: I needn't water the flowers. 一般疑问句:Need+主语+v/原形 eg: Need you water the flowers? 当need为...

@甄杰3118:needn't和don't need的区别和用法 -
逄胖18975108139…… 是这样的,needn't do 和 don't need to do 两者有些差别.就像needn't have done 和 didn't need to do 一样.从用法上,前者是情态动词,后者是实义动词.从意义上,前者暗示已经做了,有“本不需要”的意思,后者暗示还没有做,就是纯粹地“不需要”.如:You needn't do the housework.(说话时你已经做了家务) You don't need to do the housework.(说话时你尚未做家务

@甄杰3118:need 作为情态动词与实意动词时的区别和用法 -
逄胖18975108139…… 作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同:没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;在一个限定动词词组中只能有一个情态动词.一、need表示“需要”或...

@甄杰3118:neednot spend中间加to吗? -
逄胖18975108139…… “need”作为实义动词时,通常用法是 人+need +to do 物+need +doing 物+need +to be done

@甄杰3118:need do sth.和need to do sth.有什么区别?
逄胖18975108139…… needn`t do sth情态动词 don`t need实义动词 “need”双重角色的用法及其区别 “need”既可以作情态动词,也可以作实义动词,但是它们的用法不同. 作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相...

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