Module12Help课型：前置语法课【学习目标】1.了解并掌握情态动词can，must的意义和用法；2.掌握情态动词can,must的各种句式转换。【学习过程】课前朗读朗读学过的单词、短语、对话、课文等或预习新单词I.情景导入通过谈论“家规”或“校规”，引出要学习的语法知识，如：你必须先完成作业；你上课不准迟到；晚上你不能外出；你不可以在教室里听音乐；在图书室里你不准大声喧哗等。展示句型结构：Youmustfinishyourhomeworkfirst.Youmustn’tbelateforclass.Youcanplaysocceronweekends.Youcan’tgooutatnight.II.精讲规则1.情态动词must的用法⑴must表示主观义务，意思是“必须”；由must引起的疑问句，肯定回答要用must,否定回答要用needn’t，意为“不必”。例如：Imustfinishtheworkbeforenine.—MustIfinishtheworkbeforenine?—Yes,youmust.—No,youneedn’t.⑵mustn’t表示禁止，意为“不可以；不准；千万不要”。由may引起的疑问句，肯定回答要用may,否定回答常用mustn’t。例如：Youmustn’tcomelatetomorrow.—MayIhandinthepapernexttime?—Yes,youmay.—No,youmustn’t.⑶must表示肯定的猜测，意为“一定”。例如：Youmustbetiredafteralongjourney.Hemusthavereadthebookseveraltimes.2.情态动词can的用法⑴can表示允许，意为“可以”。例如：Youcangoandseetheliondance.Hecanstayathome.⑵can表示能力，意为“会；能够”。例如：Hecandriveacar.MylittlebrothercansingEnglishsongs.⑶can表示猜测，意为“可能”。例如：Shecanbeathomeatthemoment.Itcan’tbehim.HehasgonetoBeijing.注意：⑴在表示客观需要时一般用haveto，意为“不得不”，而must强调主观上的“必须”。It’srainingheavilysowehavetostayathomeanddosomereading.Imuststopsmoking.⑵在表示能力时，can可以和beableto互换，但是can只有过去和现在形式；而beableto有各种人称和时态的变化。例如：Hecouldrideabicyclewhenhewasyoung.Hewillbeabletomendthemachine.III.专项训练单项选择1.Thattallboy_____beJohn.Johnismediumheight.A.mustn’tB.mustC.can’tD.might.2.—Let’sgodancingtonight.—Sorry,I_____.Ihavetogotoameeting.A.can’tB.mustn’tC.maynotD.needn’t3.We_____talkloudlyinbusesortrain.A.mustB.mustn’tC.needD.needn’t4.—WhereisMomnow?—I’mnotsure.She___beinthekitchen..A.shallB.mayC.needD.must5.Youhavealreadytriedyourbest,soyou____worryaboutthematter.A.can’tB.needn’tC.mustn’tD.couldn’t6.—Canyouplaywithayo-yo,Jim?—Yes,I_____.It’seasy.A.mustB.canC.needD.may7.—Whatdidtheheadmastersayatthemeeting?—Hesaid,“We______beproudofworkinghard.Wemustn’tbelazy.”A.mustB.needn’tC.mayD.couldn’t8.—MustIfinishthatworktoday?—No,you______.Youmayfinishitin3days.A.mustn’tB.needn’tC.shouldn’tD.couldn’t9.Youareveryill,soyou_______stayinbedforaweek.A.canB.needC.mustD.may10.You_____driveacarattheageof16.A.mustn’tB.needn’tC.couldn’tD.can’tIV．综合练习：一、Fillintheblankswithcan,can’t,must,mustn’t,needn’t,may.1.InBritain,you_______be18yearsoldifyouwanttodriveacar.2.You_______smokeatthegasstation(加油站),oryou______startaterriblefire.3.We________readother’sdiarieswithoutpermission.(允许)4.—_______youhelpmewithmyEnglishlesson?—Ofcourse.5.They_____gotothemuseumbecausetheyhavenomoney.6.Don’topenthepresentnow!You_____waitandopenitlaterinChina.7.—MustItakethemtothebedroomnow?—No,you________.Yourfatherwilltakethem.8.—Whoseistheblackpen?—It_____beLucy’s.Becauseshehasapenlikethis.二、单项选择1.—Mustwefinishtheworkbeforesix?—No,you____.Youmaydoittomorrow.A.mustn’tB.maynotC.needn’tD.can’t2.—IthinkMissGaomustbeinthelibrary.Shesaidshewouldgothere.—No,she_______bethere.I’vejustbeenthere.A.can’tB.mustn’tC.needn’tD.wouldn’t3.—What...
