need的几种用法

Question

如题所述

Answer 1

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：I needn't work hard.\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：Need I help you?\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：I don't need to work hard.\x0d\x0a其疑问句也必须借助于助动词do/does/did等变化。\x0d\x0a如：What do you need me to do?\x0d\x0a其结构一般有：\x0d\x0aneed sb/sth 如：I need you. I need your help.\x0d\x0aneed to do sth 如：I need to work harder.\x0d\x0aneed sb to do sth 如：I need you to help me.\x0d\x0aneed doing = need to be done 如：My watch needs repairing. = My watch needs to be repaired

Answer 2

need是英语中常用的一个词,它既可用作及物动词、情态动词,也可用作名词.本文拟就其主要用法小结如下:一、用作及物动词,译为“需要、必要”之意,后面可接名词、代词、动词不定式或动名词作宾语.例女日:l.He needs some helP.他需要帮助.2.1 need you very mueh.我很需要你.3.、bu need to work hard.你需要努力学习.4.Tlle house needs cle乏幽19.那屋子需要打扫.注意:如果need后面的动词与句子的主语具有动宾关系,这一动词则应用动词一ing形式,该形式是主动形式表示被动概念,但不能用被动形式,不能说need being done,如果用动词不定式来代替动词一ing形式,则须用不定式的被动形式.例如:The flowers need watering.(The flowers needto be watered.)这些花需要浇水.此外,need作及物动词用时,其后不能接复合宾语.

Answer 3