外研版高中英语必修第二册学案Unit2Letscelebrate突破·语法大冲关Word版含解析【高考】

情态动词(2)1．may/might[观察例句]①—MightIaskforapictureofyourlittledaughter?—Yes，youmay.②Wemaygotothecinematonight，butwearenotsureyet.③Mayyoubehappyeveryday!④Thereisnothingtodo，soImayaswellgotobed.[归纳用法](1)表示请求、许可。在疑问句中用might比may的语气更委婉。(2)表示推测意为“可能、或许”。might比may语气弱。(3)表示祝愿，常用结构为“May＋主语＋动词原形！”(4)may/mightaswell表示“不妨”。[即学即练1]单句语法填空①May/MightItakethebookoutofthelibrary?②Hemayebackinanhour，butI'mnotsure.③Nowthatyouhavee，youmay/mightaswellstay.④Mayyouenjoyyourself!2．shall/should/oughtto[观察例句]①ShallIbuysomepicturebooksforthechildren?②ShallTomgotherewithmetomorrow?③Youshallfinishyourhomeworkfirstbeforeyougooutandplay.④Oneofourrulesisthateverystudentshallwearschooluniformwhileatschool.⑤Youshould/oughttoputmoreeffortintoyourwork.⑥Shepromisedtoeby10o'clock.Sheshould/oughttobehereatanymoment.⑦It'snotsurprisingthatpeopleshouldbesuspiciousofpoliticians'promises.[归纳用法](1)shall用于第一、三人称的疑问句中，征求对方的意见。(2)shall用于第二、三人称的陈述句，表示说话人给对方的命令、警告、允诺或威胁；此外，当颁布法律、规定时也用shall。(3)should/oughtto都表示劝告和建议，意为“应该”。此时oughtto比should语气要强。(4)should/oughtto都表示预测可能性，意为“按道理应该会”。(5)should表示惊讶、意外等情绪，意为“竟然”。[即学即练2]单句语法填空①Shallweputoffthesportsmeettillnextmonth?②Youshallreceiveallthemoneythatisowedtoyou.③Weshould/oughttobestrictwithourselves.④HeleftParisinthemorning.Soheshould/oughttoarriveherebysuppertime.⑤Itisstrangethatsuchthingsshouldhappeninourschool.3．will/would/usedto[观察例句]①Ifyouwillreadthebook，Iwilllendittoyou.②Wouldyoueintothebarandhaveadrinkwithme?③Everyeveninghewillhaveawalkalongtheriver.④IstillremembermyhappychildhoodwhenmymotherwouldtakemetoDisneylandatweekends.⑤Heusedtospendallhismoneyonfoodanddrink;nowhelivesasimplelife.[归纳用法](1)will/would表示意愿，可用于各种人称。(2)will/would表示“请求；建议”，此时would比will更委婉。(3)will/would表示习惯，意为“总是，习惯于”。与usedto相比，would表示过去重复、习惯性动作；而usedto则强调过去与现在的对比。[即学即练3]单句语法填空①Wewillnevergiveupworking，whateverhappens.②Wouldyoumindopeningthewindowforme?③Hewilltalkforhoursifyougivehimthechance.④LastyearourEnglishteacherwouldtellusstoriesinEnglishafterclass.⑤Iusedtosmoke，butIhavegivenitup.4．“情态动词＋havedone”[观察例句]①Sincenobodygavehimanyhelp，hemusthavedonetheresearchonhisown.②Hecan'thavegonetoShanghai，forIsawhimaminuteago.③Hemighthavesaidsoatthemeeting，butI'mnotsure.④Youcouldhavedonebetter，butyoudidn'ttryyourbest.⑤Iwasreallyanxiousaboutyou.Youshouldn'thavelefthomewithoutaword.⑥Youneedn'thavetoldhimthenews;hehashearditalready.[归纳用法]※表示对过去的推测(1)musthavedone表示对过去发生的事情十分肯定的推测，意为“一定做过某事。”(2)can/couldhavedone用于否定句和疑问句，表示对过去发生的行为的怀疑和不肯定，意为“不可能已经……”或“可能已经……了吗？”(3)may/mighthavedone用于肯定句和否定句，表示对过去发生某事的可能性的推测，意为“或许做过某事”或“或许没做过某事”。※表示后悔、责备或遗憾等情绪(4)can/couldhavedone用在肯定句中，表示对过去没有实现的可能性的遗憾，意为“本来能做……实际上却未做”。(5)should/oughttohavedone表示本该做某事而实际上未做；否定式表示本不该做但却做了。(6)needn'thavedone表示做了本来不必做的事。[即学即练4]完成句子①昨晚一定下雨了，因为地面还是湿的。Itmusthaverainedlastnight，forthegroundiswet.②他或许会多给你一些帮助，即使他很忙。Hemay/mighthavegivenyoumorehelp，eventhoughhewasbusy.③他本来能通过考试，但他太粗心了。Hecouldhavepassedtheexam，buthewastoocareless.④你本没有必要来，今天是周日。Youneedn'thaveetotheschool.ItisSundaytoday.⑤现在太晚了，那时你本该抓住机会的。It'stoolatenow.Youshouldhavegraspedthechancethen.Ⅰ.用适当的情态动词填空1．Theymay/mightbehavingameeting，butI'mnotsure.2．Whenhelivedinthecountryside，hewouldgofishingeveryday.3．Ifyouwillhelpus，weshallbeverygrateful.4．Don'tworry，youshallhavethereplythisafternoon.5．Canhehavegoneabroadwhenwegetthere?6．Hemusthavebeentotheisland，forheknowsalotaboutit.7．Georgecan'thavegonetoofar.Hiscoffeeisstillwarm.8．Youneedn'thaveworried－itallturnedoutfine.9．Theflowershavedied.Ishouldhavewateredthemoften.10．Hecouldhavepassedthedrivingtestatthefirstattempt，buthewastoonervous.Ⅱ.用适当的情态动词或括号内单词的适当形式完成短文I'msorrytolearnthatyou'vefailedintheexamination.Yousaidyoucould1.havepassed(pass)itbutyouweretoonervous.Butthings2.maynotbelikethat.Ifyouhadmadeenough3.preparations(preparation)，youwouldn't4.havebeen(be)toonervous.Ithinktherealreasonforyourfailure5.mustbethatyoudidn'tdoyourbest.Whenanopportunityes，we6.should/ou