06考点六情态动词

考点六情态动词-2--3-第1步

技法探究一、can,could-4-例:Althoughheisonlyfour,hecanplaythepiano.例:—CouldIborrowyourbicycle?—Yes,youcan./No,youcan’t.例:Thatcan’tbeMary,forsheisinhospital.注意:can有时也用于肯定句,表示理论上的可能性或一时的情况。常译为“有时会”。Mothercanbeveryforgetfulsometimes.IngeneralTomisagoodman,buthecanbeveryhardsometimes.辨析:-5-can与beableto(1)表示能力时,can与beableto意义相同,但是can仅用于一般现在时及一般过去时,beableto可用于更多时态。(2)过去形式的could与was/wereableto相比,could仅说明具备某种能力,而was/wereableto则侧重通过某种努力已经达到某种结果,常译为“成功做到了”。Asaboyoften,hecanoperatethecomputerskillfully.Hewasabletogetoutoftheroomwhenthefirebrokeout.-6-二、may,might-7-例:MightImakeasuggestion?例:ThiscoatmaybePeter’s.Hemightbedoinghishomeworknow.例:Mayyousucceed!注意:may表示请求许可时,其否定回答一般用mustn’t。maynot意为“可能不”,而can’t意为“不可能”。—MayIuseyourcomputer?—Yes,youmay.(No,youmustn’t.)-8-三、will,would例:Willyouhelpmewiththeluggage?Wouldyoupaymeincash,please?Theyaskedifwewoulddothatagain.例:Oilwillfloatonwater.-9-辨析:would与usedtowould表示过去的习惯时仅指动作,而且不与现在作对比;usedto表示过去的习惯动作或状态,而且与现在作对比,说明现在这种动作或状态已经不存在。Inthosedayshewouldsitsilentlyatthedoorforhours.Heusedtoswiminthelittleriverwhenhewasaboy.-10-四、shall,should-11-例:Shallhecomeinorwaitoutside?例:Youshallremaininyourseatsuntilallthepapershavebeencollected.例:Youshouldbecarefulwhendoingyourjob.例:Weshouldarrivehomebeforedark.例:HowshouldIknowit?-12-五、must,have

to1.must表示非常有把握的推测,仅用于肯定句。例:Youmustbetiredafterthelongjourney.2.表示“必须;一定”,must侧重主观,haveto侧重客观。例:Thechildrenmustbebackby4o’clock.3.表示说话者的感情色彩,暗含不耐烦或与自己的愿望相反,意为“偏要;非要”。例:Ifyoumustleave,pleasedoitquietly.Thebabyissleeping.注意:在回答must的问句时,否定回答通常用needn’t或don’thaveto。-13-六、need,dareneed意为“需要”,dare意为“敢”,二者都既可作情态动词也可作实义动词,一般在疑问句和否定句中作情态动词用,在肯定句中作实义动词用。例:—Needhegoyesterday?—No,heneedn’t.例:Shedarenotgooutaloneatnight.-14-第2步

真题试做1.(2019·广东)Hebegantothinkthathewouldsaveeggsuntiltheywereinshortsupply.Thenhe

earnasmallamountofmoneybysellingthemataverygoodprice.

2.(2018·广东)Notonly

theydosimplejobsforus,suchasputtingthingsintoboxes,butalsotheycanlookafterbabies.

3.(2017·广东)NowIknowthatafter-classactivitiesareimportantbecausewe

learnaboutresponsibilityandteamwork.

could解析:由前一句可知此处应用could表示过去的能力。

can解析:not

only...but

also...连接两个并列句,由第二个分句的谓语动词can可知第一个分句中的谓语动词也用can,表现在的能力。can-15-4.(2017·北京高考)Samuel,thetallestboyinourclass,

easilyreachthebooksonthetopshelf.

5.(2017·天津高考)Myroomisamess,butI

(need)cleanitbeforeIgoouttonight.Icandoitinthemorning.

can解析:句意:班里最高的男孩塞缪尔可以很容易地够到书架顶部的书。根据句意,应填can“能够;可以”。needn’t解析:由后面的“I

can

do

it

in

the

morning.”可知,此处表示“没必要今晚打扫”,故填needn’t“不必”。-16-第3步

模拟通关1.(2019·广东佛山五校联考)Soyou

payattentiontosleeplessness.

2.(2019·广东肇庆八校联考)Sinceyouhavesuchgoodpreparations,there

notbeanyproblemaboutpassingthecomingjobinterview.

must/should解析:根据语意可知,此处为给别人提出建议,所以填must/should,表示“务必/应当……”。should解析:根据since提供的原因“准备充分”可以判断出,此处表示“按理说应该发生”的,故本空填情态动词should。-17-3.(2019·广东中山五校联考)Ithasbeenacceptedthatallthestudents

putonmasksbeforegoingtoschoolincasetheyareinfectedwithfluvirus.

shall解析:在第三人称作主语的陈述句中,表示规定、规则,用shall。4.(2019·广东深圳二诊)Therewasalittlemousestayingathomeallday.I

goout,evenatnight.

daren’t解析: