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the rain.他不必要站在雨中?! ?.We needn39。t be waiting in this place.我們不必要在這兒等?! ?.The hedges needn39。t be trimmed this week.本周樹蘺不必要整修?! ∷摹⑵湟话阋蓡柧涞拇鹫Z,肯定用must,否定用needn39。t?! eed I go with her? 我需要和她一起去嗎? Yes,you must. 是的,你需要去?! o,you needn39。t. 不,你不必去。作實(shí)義動(dòng)詞 主+need +to do 主+need +doing =sth+need +to be done (都是實(shí)義動(dòng)詞,注意其否定為主+don‘t/doesn39。t+need +to be done或主+needn’t +be done 例如:The room needs cleaning = The room needs to be cleaned. 房間需要打掃了。 另外,“need”作實(shí)義動(dòng)詞時(shí)后還可以直接跟名詞。請(qǐng)看下面的例子: It is a question that needs very careful consideration.這是一個(gè)需要慎重考慮的問題 很簡(jiǎn)單的方法區(qū)別情態(tài)動(dòng)詞與實(shí)義動(dòng)詞:當(dāng)need為情態(tài)動(dòng)詞時(shí),意思是“必要”,否定為needn39。t,后面大多接動(dòng)詞原形,表示動(dòng)作; 當(dāng)need為實(shí)義動(dòng)詞時(shí),意思是“需要”,否定為don39。t need,后面大多跟名詞。詞匯搭配 ~+名詞 need clothes 需要衣服 need education 需要受教育 need food 需要食物 need help 需要幫助 need money 需要錢 need rice 需要大米 need water 需要水 ~+副詞 need critically 極為重要地需要 need desperately 不顧一切地需要 need directly 直接地需要 need economically 經(jīng)濟(jì)上地需要 need genuinely 真正地需要 need horribly 驚人地需要 need imperatively 緊急地需要 need sorely 非常需要 need spiritually 精神上需要 need urgently 強(qiáng)烈地需要 ~+介詞 need for 為…而需要 need in 在…需要詞語辨析 need,want 這組詞都有“需要,要求”的意思。其區(qū)別是:need表示因缺少而需要某物或需要做某事,尤其強(qiáng)調(diào)這種需要的迫切性; want表示從一般需要的意向到強(qiáng)烈、迫切的要求以及各種程度不同的愿望。need作情態(tài)動(dòng)詞的用法:need用作情態(tài)動(dòng)詞時(shí)表“必須必要”的意思,后直接跟動(dòng)詞原型,且need無人稱、數(shù)的變化(第三人稱單數(shù)不加s),也沒有非謂語形式(不定式、分詞)。注意:need用作情態(tài)動(dòng)詞時(shí)常用于否定句和疑問句中。例:Need he bring his laptop tomorrow? 明天他必須帶他的筆記本過來嗎?Come on, you needn39。t worry about it becuse it39。s not your fault. 行啦,你不必?fù)?dān)心的因?yàn)槟遣皇悄愕腻e(cuò)。She needn39。t have arrived so early, need she? 她本不必到得這么早,不是嗎?注意:must引導(dǎo)的一般疑問句的否定回答必須使用needn39。t。例如:Must I leave? 我必須離開嗎?No, you needn39。t. 不,你不必離開。二、need作實(shí)意動(dòng)詞的用法:need + something 需要某物例:I need some fruits to eat. 我需要些水果來吃。need to do something 需要做某事例:You don39。t need to have the bike repaired right away. 你不必馬上去修車。need doing = need to be done 需要……例:The room needs cleaning = The room needs to be cleaned. 房間需要打掃了。need somebody to do something 需要某人做某事例:I need someone to help me out of this problem. 我需要找人來幫助我解決這個(gè)問題。三、need作名詞的用法:need用作名詞時(shí),既可以是可數(shù)名詞,也可以是不可數(shù)名詞。主要常用句型如下:(There39。s) no need to do something 沒必要做某事例:There39。s no need to cover such a long distance. 沒必要走那么遠(yuǎn)的距離。There39。s no need for me to break the window because I have the key. 我沒必要打破窗戶因?yàn)槲矣需€匙。No need to run since we39。re not pressed for time. 不必跑啦,我們 又不趕時(shí)間。也可以單獨(dú)使用:There39。s no need. 意思是“沒有必要”。in (great) need of (非常)需要例:The rescue team is in great need of medicine. 救援小組非常需要藥品。if need be 如果需要的話例:If need be, I39。m going to do you a favor. 如果需要的話我會(huì)幫你的。四、關(guān)于need的一些短語、俚語用法。A friend in need is a friend indeed. 患難之交才是真朋友。 could+have+過去分詞”的10種用法一、表示主觀猜測(cè)即對(duì)已經(jīng)發(fā)生動(dòng)作或已經(jīng)存在的狀態(tài)作出主觀上的猜測(cè),通常可譯為“可能(已經(jīng))”,有時(shí)需根據(jù)具體語境來翻譯。如:We could not have heard them because of the noise from the river. 由于有河水聲我們不能聽見他們的話。Tom could have taken the money。 he was here alone yesterday. 有可能是湯姆把錢拿走了,昨天他單獨(dú)一個(gè)人在這里呆過。We knew he couldn’t have paid for it, b