2017-2018学年度人教版必修3Unit 1Festivals around the worldPeriod4Grammar学案.docx

2019学年度人教版必修3Unit1FestivalsaroundtheworldPeriod4Grammar学案设计学习目标1.Tomastertheusageofmodalverbssuchascanmaymustshouldshalletc.2.Tolearntousemodalverbsinrealsituationsthroughpractice.学习过程Ⅰ.情态动词的定义用来表示说话人的某种感情或语气对某一动作或状态的看法、态度即说话人认为某事“可能”“或许”“应该”或是“必须”等意义。Ⅱ.情态动词的特点(1)情态动词本身不能单独作谓语其后加动词原形。(2)情态动词没有人称和数的变化只用在一般现在时和一般过去时中(haveto除外)情态动词的现在式可以表示现在和将来;过去式除了表示过去外还可用于表示较为委婉的语气例如:couldwould等。Ⅲ.情态动词can/couldbeabletomay/mightwill/wouldshall/shouldmusthaveto的意义和用法学习建议:根据所列例句理解并尝试总结情态动词的基本用法。1.can和could(1)HecanspeakbothEnglishandFrench.他会说英语和法语。(2)Could/Canyoutellmehowtogettothezoo?你能告诉我怎么去动物园吗?(3)Electricitycanbedangeroussometimesifusedwrongly.用电错误有时可能会很危险。(4)Wherecan/couldtheyhavegone?他们可能去哪儿呢?(5)Howcouldyoudosuchasillything?你怎么能做这样的傻事?注意:can与beableto的区别(1)Noonecould/wasabletoanswerthequestion.没人能回答这个问题。(2)Thefirespreadquicklybuteveryonewasabletoescape.火势迅速蔓延但大家都逃了出来。can/could所表示的各种含义(1)(2)(3)(4)(5)(6)can与beableto的区别2.may和might(1)May/Can/Could/MightIhaveatalkwithyou?我可以和你谈谈吗?(2)Yourmathsteachermay/mightbeinhisoffice.你的数学老师可能在他的办公室。(3)Mayyousucceed.祝你成功。(4)Youmayaswellgotoseethedoctor.你最好去看医生。may/might所表示的各种含义(1)(2)(3)3.will和would(1)Willyoushareyourhappinesswithus?你可以把你的快乐与我们共享吗?(2)Ifyouwillcometothepartywe’llbeveryhappy.如果你愿意来参加聚会我们将非常高兴。(3)Hewouldbenervouswhenhemetstrangers.遇见陌生人时他总是很紧张。will和would所表示的各种含义(1)(2)(3)4.shall和should(1)ShallIcarryitforyou?我来帮你搬好吗?(2)HeshallhavethebookwhenIfinishreading.我看完这本书就给他看。(允诺)(3)Youshouldn’thaveenteredtheteachers’officewithoutpermission.未经允许你们不应该进教师的办公室。(4)Ifthecarshouldbreakdownonthewayyouwouldhavetowalkback.万一汽车中途抛锚你就得走回来。shall的用法(1)(2)(3)shouldn’thavedone(4)should5.must和haveto(1)Hehastopassanexaminationbeforehecanstartwork.他必须考试及格才能开始工作。(2)—MustIreturnthebooktoday?我今天就要还书吗?—Yesyoumust.是的你必须还。(—Noyouneedn’t/don’thaveto不你不必。)(3)Thestreetiswe