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1704791858 英文疑难详解 [:1704787088]
1704791859 英文疑难详解 98.need 的用法
1704791860
1704791861 He doesn’t need to be told . He needn’t be told.两句不知意义和用法上有何不同?这个 need 可作正动词用,又可作助动词用,请将其用法上的区别举例说明。
1704791862
1704791863 【解答】 He doesn’t need to be told.意为“他已经知道,用不着告诉他。”是强调现状的说法。 He needn’t be told.意为“他知道的,用不着告诉他。”是强调今后的行为的说法。
1704791864
1704791865 关于正动词 need 的用法,和普通动词一样,第三人称单数现在要加“s”,过去式要加“ed”,字前可加用助动词,例如:
1704791866
1704791867 Each of us needs to master such a foolish fear.(我们每个人都必须把这样愚蠢的恐怖心理加以克服。)
1704791868
1704791869 She did not need to be told twice.(对她只消说一遍就行了。)
1704791870
1704791871 He has never needed to hurry more than now.(他从来没有现在这样需要急忙的。)
1704791872
1704791873 I may need to come in again in a few days.(也许过几天我还得再来。)
1704791874
1704791875 Not needing to hurry, I walked along leisurely.(既不用忙,我就很悠闲地慢慢走去了。)
1704791876
1704791877 I made them much bigger than I need to have done.—— Jespersen(我把它们做得比必要的大多了。)
1704791878
1704791879 That does not need accounting for.= That needs no accounting for.(那个不必解释。)
1704791880
1704791881 关于助动词 need 的用法,照文法上的规则,是在问句和否定句中,need 要拿来当助动词用,即是主语第三人称单数现在不加“s”,不用 Do- Form,后接无“to”的不定词,不过也常有例外。
1704791882
1704791883 Need he hurry?(他必须赶快吗?)这句改用正动词也是一样的意思: Does he need to hurry?
1704791884
1704791885 You need not have given yourself such trouble.(你原用不着这样给自己找麻烦的。)
1704791886
1704791887 It need not be true.(这不一定是事实。)
1704791888
1704791889 助动词的 need,过去式和现在式一样,形式不变,即是不要写成 needed 的形式,例如:
1704791890
1704791891 The children were told that they need not stay.—— A. S. Hornby(告诉孩子们没有留下的必要。)
1704791892
1704791893 如上例所示在 Reported Speech(转述的话)中,这个现在式的 need 可作过去式用,至于在问句或否定句中可以有这种用法,更不待言。
1704791894
1704791895 Need he go yesterday?= Did he need to go yesterday?(在昨天他有去的必要吗?)
1704791896
1704791897 He need not go yesterday.= He did not need to go yesterday.= He needed not to go yesterday.(他昨天没有去的必要。)
1704791898
1704791899 He need not have any help from us yesterday.= He need have no help from us yesterday.= He did not need to have any help from us yesterday.= He needed not to have any help from us yesterday.= He needed to have no help from us yesterday.(昨天他不需要我们的任何帮助。)
1704791900
1704791901 有些句子多少含有否定或疑问意味的,都适用上述的用法,如:
1704791902
1704791903 He need only (或 but)have a little help from us yesterday.(他昨天只消我们稍予帮助就好了。)这句也可以说: He needed only (或 but)to have a little help from us yesterday.
1704791904
1704791905 All he need do was to inquire.(他只消问一声。)
1704791906
1704791907 She wanted me to tell her whether she need copy her composition again.(她要我告诉她看她的作文要不要重抄一遍。)
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