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情态动词重难点分析情态动词的高考命题导向情态动词表示说话者的观点和态度,有一定的含义,但是不能单独充当谓语,必须与其他动词连用注意区别具有相同功能的,意思相近的情态动词的用法
一、情态动词基本用法一览表情态动词用法例句注意事项表许可(和may可互换)、能力;can和be ableto都可表能力,You can/may sithere.can表怀疑、猜测、可能性(用于否定和但be ableto可表“某事终于He can t besixty.could疑问句中),could可表比can更委成功力有时态的变化Could youe againtomorrow婉的语气及用于虚拟语气对May…do…?的否定回答用表许可(问句中表请求,might更委May/Might Iuse yourbikemay mustn,t/can,t婉);表可能、或许、猜测(might语He may/might beat home.might对May/Might…do・・・?的否定气更加不肯定);表祝愿(用于倒装May yousucceed!回答用can t/might not句中)You muststudy hard.表必须、应该(表主观要求);表推否定式mustn t表“不准、禁must Shemust betired.测(用于肯定句),意为“准是、一止”;对Must…do…?的否定”定回答用needn t/don t/doesn thave to(不必)have to只好,不得不(客观的必须),口haveto有时态和人称的变化Without help,I hadto doit语中也可用have/has gottomyself.ought to应当(表示义务或责任,口语中多You ought to obeylaws.否定式oughtn t;疑问句用用should)Ought・・・to do-**用于
一、三人称的疑问句,表征询意Shall wego nowshall见;用于
二、三人称,表不许诺、命The sighthere reads,“No令、警告或表示说话人的决心等person shallsmoke here.”表建议或劝告,意为“应该”、本You shouldlearn fromeach该(含有责备意味)other.shouldYou should have givenhimhelp.表意志或决心;疑问句中用于第二人He promisedhe wouldnever would表示过去的习惯或喜好,will称表请求(would比较委婉)smoke again.不涉及现在;used to表示过去wouldWill/Would youlike sometea常常做现在已经不再有的习惯敢(常用语否定句、疑问句和条件过去式dared;可作实义动词He darenot/daren tsleepdare状语从句中)alone.Dare youtouch itneed需要、必须(常用于否定句和疑问Need…do…?的肯定回答You needn,t dothe work now.句中)Yes,•••must;可作实义动词过去常常(现在已不再)He usedto playfootball.否定式usedn t/usen tto do/used notto do/didn tuse tousedtodo;疑问Used…to do・・・Did---use todo
二、“情态动词+be doing”和情态动词+have done”用法一览表句式说明例句can+be doingHe can t betelling lies.他不可能在说谎表示“可能用于否定句和疑问句can+have doneHe cant have told lies.他不可能说了谎话(could也有此用法,只是语气更委婉)could+have done指过去没实现的动作,表“本来It stoo late.You couldhavetoldhim可以“earlier.太迟了,你本来能早点告诉他的may+be doing表示“可能、也许,用于肯定He maybe doinghomework.他也许在做作业may+have done句He mayhave missedthe train.他可能错过了火车must+be doing肯定句,表示“定在干某事”The lightis on.He must be working.灯亮着,他一定在工作must+have done肯定句,表示“准是干了某事”,He issad.He must have failedthe exam.他很伤心,对过去事情的肯定猜测准是考试不及格“本来不必做用于否定句You needn t havelent thebook tohim.He hasboughtneedn,t+have italready.你本来不必把这本书借给他,他已经买了一done本should/oughtto+肯定句表示“本应该做而实际没I shouldhave boughtit.我应该把它买下来的have done做”;否定句表示“不应该做而实You shouldn,thavescolded him.你不应该责骂他的际却做了”考点练透
一、单句填空用情态动词或所给词的适当形式填空
1.I shouldhave beenthere,but Ifind the time.
2.Helen goon thetrip withus,but sheisn tquite sureyet.
3.Tom,you notleave allyour clotheson thefloor likethis!
4.You cant imaginethat awe11behaved gentlemanbe sorude toa lady.
5.It hasbeen announcedthat candidatesremain in their seatsuntil allthe papershavebeen collected.
6.—Lucy doesn,t mindlending youher dictionary.一She,I havealready borrowedone.
7.John,look atthe time.you playthe pianoat sucha latehour
8.一this bookbe yours一No,it bemine.It hehis.
9.As agirl,she getup atsix everyday.
10.he toclean theclassroom afterschool
11.You betired afterthe longtrip,aren tyou
12.一What sthe name―Khulaifi.I spellthat foryou
13.You seethe film,haven tyou
14.You talkon thephone atthat time,for Icouldn tget through.
15.Theymiss theplane,or perhapsthey havebeen preventedfrom ingfor somereasons.
16.you passthe CollegeEntrance Examination!
17.He hadknown thematter beforeyou toldhim,so younot tellit tohim.
18.I didnot callto makeany airlinereservation butI.
19.The lightis out.They notworknow.
20.一My catis reallyfat.一You notgive herso muchfood.
二、语法填空阅读下面短文,在空白处填入一个适当的单词或括号内单词的正确形式Many studentswant toknow aboutthe differencesbetween AmericanEngl ishand British English.Howdid thesedifferences e about Thereis noquick answer]this question.At firstthe languagein BritainandAmerica wasthe same.In1776American became2independent country.After that,the language3slowbegan tochange.For along timethe languagein Americastayed thesame,4the languagein Englandchanged.For example,300years agothe Englishtalked about“fall”.Today,most Britishpeople talkabout“autumn”,5Americans stilltalkabout“fall”.In thesame wayAmericans stilluse theexpression“I guess”meaning”I think,just6the Britishdid300years ago.At thesame time,British Englishand AmericanEnglish startedborrowing wordsfrom otherlanguages,7end upwith differentwords.For example,the Britishtook“typhoon”from Chinese,while theAmericanstook“tornado“from Spanish.The differencesare8great inthe spokenlanguage.For example,Americans saydance/dcens/,andin southernEngland peoplesay/da:ns/.In America9pronounce not/na:t/;in southernEngland theysay/not/.However,most ofthetimepeople fromthe twocountries donot haveany difficultyin10understand eachother助读词汇independent adj,独立的pronounce vt.发音.eabout产生after that之后inthesame way同样;以同样的方式have difficultyin在某方面有困难参考答案考点练透
一、单句填空
1.couldn t
2.may
3.must
4.should
5.shall
6.neednt
7.Must
8.Can;cant;must
9.would
10.Ought
11.must
12.Shall
13.must haveseen
14.mustbetalking
15.must havemissed
16.May
17.needn thavetold
18.shouldhave
19.cantbe working
20.shouldn thave given
二、语法填空本文主要介绍英国英语和美国英语之间的差异
1.to常用搭配,answer tothe question(问题的答案)类似还有key tothe door(门的钥匙)
2.an不定冠词的基本用法,an在此意为“一个(独立的国家)空后independent以元音音素开头,故填ano
3.slowly副词修饰动词
4.while这里是两种语言的对比,用转折连词while(两者对比常用并列连词while)
5.but空的前后是两个分句,故填连接词根据两句间的逻辑关系可知此处存在一个转折关系,故填buto
6.as根据句意可知,此处是指“正如300年前不列颠人使用的一样just as在此意为“正如”,引导方式状语从句
7.ending分析句子成分可知,动词end在此作非谓语end在此与逻辑主语BritishEnglishand AmericanEnglish是主动关系,故填ending作结果状语
8.greater这是一个隐性比较级句意在口语方面的不同之处就更大了
9.they缺少主语填代词,they在此指代前面的Americans
10.understanding介词后的动词需用动名词形式。