高中英语 Unit2 Olympic Games grammar导学案 新人教版必修2.doc

《高中英语 Unit2 Olympic Games grammar导学案 新人教版必修2.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit2情态动词2学习目标：掌握本单元情态动词Should,oughtto,haveto,mustn’t,needn’t的用法；提高阅读理解的能力，学习重点：会正确使用这些情态动词的用法。学习难点：能辨别should与oughtto的区别；must与haveto的区别；mustn’t,needn’t的用法。学习过程：Task1:fillintheblanks.请同学们用学过的情态动词填空。1.Shehasbeencookingallthemorning.Shebetirednow.2.Don’tte

2、llanybodywhatIsaid.You______keepitasecret.3.Perhapsheisinhisoffice.=He____beinhisoffice.4.______youlikeacupofcoffee?5.InChinamanychildren________wearuniform(校服)whentheygotoschool.6.You___________believeeverythingyoureadontheInternet.情态动词21.should,oughtt

3、o都可表示“应该”。oughtto用于表示按道理应当，常指客观的义务或责任，大多数情况下可用should代替，但比should语气重。Ishouldhelpherbecausesheisintrouble.Yououghttotakecareofthebaby.表示劝告、建议或命令时，should和oughtto可通用，但在疑问句中常用should。oughtto的否定式为oughtn’tto或oughtnotto。Youshould/oughttogotoclassrightaway.ShouldI

4、openthewindow?Whatshouldwedonext?2.have to 的用法1)must表示一种主观的需要，而have to表示一种客观的需要，意思是“不得不”。 如： Ihavetoattendanimportantmeetingthisafternoon.今天下午我不得不参加一个重要的会议。Motherisout,soIhavetolookaftertheshop.妈妈不在家，因此我不得不照看商店。 2)have to 的否定形式是don’thaveto,相当于needn’t。如：

5、Theydon’thavetobuyacomputeratpresent.他们目前没有必要买电脑。3.must的肯定形式表示“必须”，否定式表示“禁止、严禁”。Youmustcomehere.Youmustn’ttakethebookawayfromthelibrary.Task2:Choosesuitablemodalverbsbelowtocompletethefollowingdialogues.ought/oughtn’tto;should/shouldn’t;mustn’t;needn’t;

6、(don’t)haveto;will;can/can’t1Sam:HowcanIgrowthinner,Mum?Mum:Well,you_______eatfoodwithplentyoffibrethathelpsyoudigestbetter.Andyou_____stopdrinkingcolaoreatingsweetfood.Sam:DoesitmeanI_________eatmyfavouritefriedchickenanymore?Mum:Notexactly,ifyoulovefr

7、iedchicken,you______giveitup.Justeatitlessoften.You______________________________worrytoomuch:alittlefriedchicken____doyougood!2Doctor:Youaresickbecauseyou’veeatenpoisonousmushrooms.Wheredidyougetthem?Lucy:Ipickedthemintheforest.Iknowwe_______eatfreshve

8、getables.Doctor:Oh,butyou_______eatthemuntilyou’resuretheyarenotpoisonous.Lucy:Thankyou,doctor.I’llbemorecarefulnexttime.3Charles:IwishIcouldseethingsclearlyinthedark.Tom:Eatingcarrots_______helpyouseebetter.You_______eatsomeever