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1、情態(tài)動(dòng)詞的基本用法情態(tài)動(dòng)詞的特點(diǎn) 1.沒(méi)有人稱(chēng)和數(shù)的變化。 2.有些情態(tài)動(dòng)詞有過(guò)去式的變化: will→would,can→could,may→might,dare→daredcan(could) 1.表示能力?! woeyescanseemorethanone. 2.表示允許。 CanIhavealookatyournewpen? Can(Could)youlendmeahand? 3.表驚異、懷疑、不相信等態(tài)度。主要用于否定句、疑問(wèn)句或感嘆句中。 Wherecan(could)theyhav
2、egoneto? Hecan’t(couldn’t)beoversixty. Howcanyoubesocareless? 4.表示猜測(cè)(肯定句把握較??;否定句幾乎為100%把握) Thetemperaturecanfallto10℃. Youcan’tbeserious.may(might) 1.表允許,might是may的過(guò)去式;用在疑問(wèn)中比may委婉、客氣?! oumaytakewhateveryoulike. HetoldmethatImightsmokeintheroom. 2.表可能
3、(事實(shí)上)。語(yǔ)氣不肯定?! emaybeathome.他可能在家?! hemaynotknowaboutit. Iamafraidtheymightnotagreewithhim. Theymightbehavingameeting,butI’mnotsure.must 1.表必須(主觀意志) Wemustdoeverythingwecantohelphim. Youmustn’ttalktoherlikethat. --Mustwehandinourexercisebooksnow? --
4、No,youneedn’t./No,youdon’thaveto. 2.表示很有把握的推斷,意為“想必、準(zhǔn)是、一定”等,只用于肯定句。have(has)to: have(has)gotto必須,不得不。過(guò)去式為hadto?! emustbeill.Helookssopale. Shemusthavealotofmoney,forshedrivesaBMW.shall 1.表征詢(xún)意見(jiàn),用于第一、第三人稱(chēng)疑問(wèn)句?! hallIgetyousometea? Shalltheboywaitoutside?
5、 It'safineday.Let'sgofishing,shallwe? 2.表說(shuō)話人的意愿,有“命令、允諾、警告、決心”等意思,用于第二、第三人稱(chēng)陳述句?! oushalldoasIsay.(命令) YoushallhavetheEnglishbookassoonasIfinishit.(允諾) Heshallbesorryforitoneday,Itellyou.(警告) Everythingthatheownsshallbetakenawayfromhim.(決心)will 1.表意愿,用于各種人
6、稱(chēng)陳述句?! willdoanythingforyou. Ifyouwillreadthebook,I’lllendittoyou. 2.表請(qǐng)求,用于疑問(wèn)句?! on'tsmokeinthemeetingroom,willyou? Won’tyoudrinksomemorecoffee? 3.表示某種傾向或習(xí)慣性動(dòng)作?! ishwilldieoutofwater. Thedoorwon’topen.would 1.表意愿?! heywouldnotlethiminbecausehewaspo
7、orlydressed. 2.表委婉地提出請(qǐng)求、建議或看法?! ouldyoulikeanotherglassofbeer? 3.表過(guò)去反復(fù)發(fā)生的動(dòng)作或過(guò)去的一種傾向。 Everytimeshewasintrouble,shewouldgotohimforhelp.should 1.表義務(wù)。意為“應(yīng)該”,用于各種人稱(chēng)。 Youshouldlistentothedoctor'sadvice.你應(yīng)該聽(tīng)從醫(yī)生建議的?! oushouldstudythearticlecarefully.你應(yīng)該仔細(xì)讀那篇文章?!?/p>
8、 2.表推測(cè),意為“想必一定、照說(shuō)應(yīng)該、估計(jì)”等?! hefilmshouldbeverygoodasitisstarringfirst-classactors. 那部電影想必很棒,都是一流的演員?! heyshouldbehomebynow.現(xiàn)在他們應(yīng)該已經(jīng)到家了oughtt