2020_2021学年新教材高中英语Unit2Let’scelebratePeriod3学案含解析外研版必修第二册202103151145.docx

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1、高考Unit2Let’scelebratePeriod3　Usinglanguage学案设计学习目标1.Tomasterthebasicusageofmodalverbstoexpressspeculation,andbeabletocorrectlyusemodalverbsintherealcontext.2.Tounderstand“BlackFriday”andbroadenyourknowledge.3.Tosummarizetheexpressionsofvariouscelebrationsduringthefestival,an

2、dlearntodescribethefestival.4.Tosendandacceptinvitationspolitely.课堂探究Step1:课前自学一、知识梳理Activity11.Lookatthesentencesfromthereadingpassageandanswerthequestions.　　aThatiswhyLettersfromFatherChristmascouldbetheperfectbook...bThechildrenmusthavebeenveryexcitedastheyopenedit.c...th

3、eymightnotreceivetheirpresentsiftheywerenotgood.(1)Whatdothewordsinboldindicate:anorder,arequest,abilityorpossibility?(2)Willthemeaningofsentence(a)changeifwereplace“could”with“must”or“might”?(3)Whathappensifwechange“must”and“might”insentences(b)and(c)into“could”?2.Lookformo

4、resentenceswithmodalsinthereadingpassage.二、学习主要用法本单元所学的情态动词表示推测的具体用法如下。情态动词对现在和未来的推测对过去的推测使用句型mustmust+musthave肯定句-6-/6高考动词原形donemay/mightmay/might+动词原形may/mighthavedone肯定句、否定句can/couldcan/could+动词原形can/couldhavedone否定句、疑问句(could可用于肯定句)should用来表示一种估计的情况“按理会/估计会”should+do/bes

5、houldhavedone肯定句、否定句、疑问句　　例句:(1)Itmusthaverainedlastnight.(2)Shemaynotbeathome.=Itispossiblethatsheisnotathome.(3)Shecantbeathome.=Itisimpossiblethatsheisathome.(4)Theyshouldbethererightnow.表推测时,英语中只使用must,may,might,maynot和cant。这五个表达的语气依次递减:must:一定(语气肯定)may:也许(不很肯定)might:或许(

6、比may语气更弱)maynot:也许不(表否定)cant:一定不(must的反义)Step2:Practice1.Whoseearringsarethese?TheybeMarys.Shewearsearringssometimes. 2.Carlsetothepartytonight,butImnotsure. 3.Thetelephoneisringing,butnobodyanswersit,hebeathome. 4.—IsthisLanQiangsboxingglove?—Yes,itbehis.Thisishisnameontheb

7、ack. 5.Youdbettertakeanumbrella.Itrainthisafternoon. 6.Itsthelibrary!Soyouknowshoutingisnotallowedhere. 7.—Haveyoudecidedwheretospendyoursummerholiday?—Notyet.WegotoQingdao. 8.—IsJessicagivingusaspeechthisevening?-6-/6高考—No,itbeher.ShehasgonetoJapan. 9.—Whatwilltheweatherbel

8、iketomorrow?—Itberainy,cloudyorsunny.Whoknows? 10.Youbetiredafterplayingspo