Module 12 Unit 3 Language in use课件(共28张PPT).ppt

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1、 Unit 3 Language in use目录目录语法聚焦0101课堂小测0202课后作业0303语法聚焦语法聚焦祈使句和情态动词must,can,could表示推测一、祈使句Open your book,please.请把你们的书本打开。Lets have a break.让我们休息一下。Let me have a look at your new bike.让我看看你的新自行车。Be careful to drive the car.小心驾驶。No swimming!禁止游泳！1.祈使句的否定形式（1）一般祈使句的否定形式是在句首加Dont。如：Dont ask me about th

2、at.不要问我那件事。（2）Let型的祈使句变否定句时，可在句首加dont，也可在动词原形前加not。如：Dont let the children know the reason.=Let the children not know the reason.不要让孩子们知道原因。2.祈使句的反意疑问句在反意疑问句中，陈述句部分是祈使句，如果祈使句是以lets开头的，附加疑问句部分用shall we；如果祈使句不是以lets开头的，则附加疑问句部分用will you。二、情态动词must,can,could表推测的用法情态动词中的must,can,could都可以表推测。具体用法如下：1.mus

3、t的用法 （1）表示推测“可能性”时，意为“一定；准是”，语气较肯定，较有把握。如：He must be American.=It is certain that he is American.他准是美国人。（2）must表推测时只能用于肯定句。如果要表示“一定不；肯定不”的意思时，应用cant，如询问某种可能时，应用can。如：He must know my address.他肯定知道我的地址。（一定）He cant know my address.他肯定不知道我的地址。（一定不）Can he know my address?他可能知道我的地址吗？（询问可能性）（3）must表示推测时，可以

4、推测现在、正在发生的动作或过去发生的动作。如：He must have a car now.他现在一定有辆小汽车。（现在）He must be doing his exercises in the classroom.他一定正在教室里做练习。（正在进行）He must have finished the work.他一定已完成了工作。（过去发生）注意：must表示推测时很少用于将来的情况。2.can/could的用法 （1）can表示推测“可能性”时，往往用于否定句或疑问句。cant意为“一定不”，语气很肯定。can在疑问句中意思是“会；可能”。如：He cant be at home.=It

5、 is impossible that he is at home.他一定不在家。（2）could可用于表示某事有可能发生或可能是事实。如：The plane could be delayed by fog.飞机可能会因为雾晚点。（3）could还可以用于表示客气、委婉、礼貌的请求语气。如：Excuse me,could you tell me where the bus station is?打扰了，请问你能告诉我公交站在哪里吗？（4）couldnt表示否定推测，表示某事不可能真实，或由于特定事实或环境某事肯定不会发生。如：It couldnt be poison.这不可能是毒药。课堂小测课

6、堂小测roublemagine一、根据中文意思或首字母提示，用单词的适当形式填空，每空一词1.I cant i_ how to live without air or water.2.When I have t_ learning English,I ask my teacher for help.armfulearthquakeclear3.Dont eat too much sugar.Its h_ to your teeth.4.After the_ （地震）,the singers gave away lots of money to the local people.5.Please

7、 keep_ （不和接触的）of fire.Its dangerous.Dontor二、按要求完成句子，每空一词6.Run and shout in the library.（改为否定句）_ run_ shout in the library.7.You mustnt be late for work.（改为祈使句）_ _ _ for work.latebeDontTellhimsuch8.Dont tell him the news.（改为肯定句）_ _ the news.9.Kate is a brave girl.We are all proud of her.（用such that 改

8、写）Kate is _ _ brave girl _ we _ all proud of her.10.Hide under the table.（改为否定句）_ _ under the table.athatareDonthide三、单项填空（）11._ on the TV,Jim.Id like to watch the evening news.OK,Dad.A.TurnB.TurnsC.TurningD.To turnAC（）12.Mr Zhou cant find his ID card anywhere.It_ be lost.A.cantB.shouldC.mustD.mustn

9、tC（）13.The bag _ Bettys.Hers is much bigger than this one.A.can beB.may beC.cant beD.may not beB（）14.What will the weather be like next week？It_ be rainy，cloudy or sunny.Who knows？A.cantB.mightC.must D.should（）15.Tom,_ afraid of speaking out your ideas.A.dontB.notC.not be D.dont beD四、语法选择（核心素养：思维品质）

10、A small boy was trying to move a big wooden box out of his yard.The box was much heavier than the boy.He tried 16 best to move it,but the box would not move at all.After resting for a glass of water,the boy tried to move it once more.This time,he pushed 17,but he still 18 move the box a bit.He was q

11、uite tired and lost heart.The boys father was coming home from work around this time.He stopped 19 his sons fruitless efforts.The father didnt help him 20 asked instead,“Son,have you tried your best?I mean,are you doing 21 you can?”“Yes,I am!”the boy cried.“No,”his father said 22,“youre not.You have

12、 not asked me 23 you.”Asking for help is not a weakness.Many people need help,and even 24 best of us need help.25 important to know when to ask for help and understand why you need it.Never be afraid to ask others for help when youre in trouble.（）16.A.he B.hisC.him D.himself（）17.A.hard B.harder C.ha

13、rdest D.hardly（）18.A.mustnt B.shouldnt C.neednt D.couldnt（）19.A.to watchB.watching C.watch D.watches（）20.A.butB.though C.because D.so BBDAA（）21.A.something B.anything C.everything D.nothing（）22.A.calmB.calmer C.calmest D.calmly（）23.A.helpB.helped C.to helpD.helping（）24.A./B.theC.a D.an（）25.A.It B.It isC.Its D.ItselfCDCBB