课时讲练通高中英语 Module 5 A Trip Along the Three Gorges Grammar2课件 外研版必修4

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1、Module 5 A Trip Along the Three GorgesGrammar 1.Learn the usage of the Modal Verbs.2.Use the Modal Verbs properly in the sentences and passages.Learning aimsLeading-in1.Dont worry about me, I can take good care of myself.别为我担心，我会照顾好自己的。别为我担心，我会照顾好自己的。2.The United States will do whatever it can to he

2、lp Greece.美国将尽一切所能帮助希腊。美国将尽一切所能帮助希腊。3.Should our children be taught to swim at school?我们的孩子应该在学校学游泳吗？我们的孩子应该在学校学游泳吗？Pay attention to the usage of the Modal Verbs.情态动词（情态动词（Modal verbs）本身有一定的词义，但是不能）本身有一定的词义，但是不能独立作谓语，独立作谓语，只能和行为动词一起构成谓语只能和行为动词一起构成谓语。情态动词。情态动词用在行为动词前，表示说话人对这一动作或状态的看法用在行为动词前，表示说话人对这一动

3、作或状态的看法或主观设想。或主观设想。 情态动词虽然数量不多，但用途广泛，主情态动词虽然数量不多，但用途广泛，主要有下列：要有下列： can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would), must not情态动词情态动词一、可兼作行为动词的情态动词：一、可兼作行为动词的情态动词： dare 、need dare和和need作情态动词时不用于肯定句作情态动词时不用于肯定句,没有人称和数没有人称和数的变化（的变化（dare的过去式为的过去式为dared）；作实义动词时可

4、用）；作实义动词时可用于肯定句、否定句或疑问句，有人称和数的变化。于肯定句、否定句或疑问句，有人称和数的变化。He didnt dare to do it. (实义动词实义动词)He dare not do it.(情态动词情态动词)他不敢那么做。他不敢那么做。He doesnt need to do it. (实义动词实义动词)He neednt do it.（情态动词（情态动词) 他不必做这件事。他不必做这件事。 注意：注意：need作实义动词时，还可表示作实义动词时，还可表示“需要需要”，后，后接接doing/to be done，表被动（需要被，表被动（需要被. .）。）。The cl

5、assroom needs cleaning/to be cleaned.教室需要被打扫了。教室需要被打扫了。The tree needs watering (to be watered).这棵树需要被浇水了。这棵树需要被浇水了。 Two eyes can see more than one. I am so strong that I can lift this stone. He said that Jack couldnt finish his work in such a short time. Could you follow my step? He is only four, bu

6、t he is able to read. She was able to do it without my help. Will you be able to come to my party tomorrow?表能力表能力can couldbe able toGrammar-1. Observation(3ms)二、二、 表示能力的情态动词表示能力的情态动词can, could, be able to的用法：的用法：be able to 能用于能用于各种时态各种时态，表示，表示主观意愿主观意愿，强调要，强调要克服困难去做某事。它的过去时用克服困难去做某事。它的过去时用was / were

7、able to，相当于相当于managed to do sth. 或或succeeded in doing sth.。它的将来时用它的将来时用will be able to。can / could 只能表示只能表示现在现在或或过去过去的能力，表示的能力，表示主观能主观能力力，不表示意愿。例如：，不表示意愿。例如： Everyone was able to escape when the earthquake happened.地震发生时，大家都设法逃了出去。地震发生时，大家都设法逃了出去。I am so strong that I can lift this stone.我是如此强壮以至于能举

8、起这块石头。我是如此强壮以至于能举起这块石头。can可以表示许可，可代替可以表示许可，可代替mayYou can go home now. 你现在可以回家了。你现在可以回家了。can表示惊讶，怀疑，不相信的语气表示惊讶，怀疑，不相信的语气Can the news be true? 这消息会是真的吗？这消息会是真的吗？can表示征求意见，请求，表示征求意见，请求，could语气更加委婉。语气更加委婉。Could you tell me how to get to the airport?您能告诉我怎么去机场吗？您能告诉我怎么去机场吗？can表示偶尔出现的事实。表示偶尔出现的事实。He can b

9、e a hard man sometimes. 他有时挺难相处的。他有时挺难相处的。can的的具具体体用用法法 【知识拓展知识拓展】 can 的一些特殊搭配的一些特殊搭配(1)cant be too/overadj./adv. =cantadj./adv. enough 再再也不过分也不过分A parent cant be over/too patient.We cant drive carefully enough.(2) cant help/choose but do 不得不做不得不做She cant help but drop school. 父母再耐心也不过分。父母再耐心也不过分。开车

10、时我们再小心也不为过。开车时我们再小心也不为过。她不得不辍学了她不得不辍学了(3)cant help (to) do 不能帮忙做不能帮忙做 cant help doing 情不自禁做情不自禁做(4)cant/couldnt agree more 十分赞成十分赞成(5)it cant/couldnt be better 十分好，非常好十分好，非常好 Grammar-2. Observation(3ms) You can go now. I wont let you down. Could I say it in Chinese? May I know your name? Would you m

11、ind closing the door? Shall we dance? Might I have a word with you?语气语气强强 弱弱表许可表许可, ,征询征询意见意见can, willcould / may / would / shall / might三、表示许可三、表示许可: may / might, can / could might, could 比较比较委婉委婉, 一般多用于一般多用于疑问句疑问句。can, may 表达的语言比较随便。表达的语言比较随便。在以在以could, might 表示表示征求对方意见征求对方意见或或表示请表示请求求时，回答应相应使用时，回

12、答应相应使用can, may。must may, might, can, could肯定句肯定句语气语气强强 弱弱表可能性表可能性( (推测推测) )There must be a mistake.It can be true.In those days few workers could support their families.You may walk ten miles without seeing a house.He might get there on time.Grammar-3. Observation(2ms)语气语气强强 弱弱表不可能表不可能( (推测推测) )cant

13、, couldntmay not, might not否定句否定句She cant be serious.We couldnt have done better.People may not pick flowers in this garden.She was afraid they might not like the idea.Grammar-4. Observation(2ms)mustnt, shouldnthad better not表禁止表禁止We mustnt waste our time.They shouldnt leave so soon.Youd better not

14、disturb him.Grammar-5. Observation(2ms)should, musthave to表义务表义务( (应该应该) )有时态变化有时态变化Grammar-6. Observation(3ms)You should do what your parents tell you.If you cant finish the book by then, you must come and renew it.This is a lovely party, but we have to go because of the baby-sister. The bridge was

15、 not wide enough so that somebody had to give way.1. 表示否定的情态动词的用法表示否定的情态动词的用法:部分情态动词的否定式是情态动词中的考点之部分情态动词的否定式是情态动词中的考点之一。一。 mustnt 不准不准, 禁止禁止 neednt 没必要没必要 ( = dont have to )cant 不能不能; 不可能不可能may not 不可以不可以; 可能不可能不shouldnt 不应该不应该 ( = ought not to )【点点 津津】2. shall和和will 的多种意义的区别的多种意义的区别: shall / will+

16、动词原形均可表示将来。动词原形均可表示将来。 过去式为过去式为 should, would。shall 1）可用于第二、三人称陈述句，表示说话人给）可用于第二、三人称陈述句，表示说话人给对方的命令、对方的命令、 警告、允诺或威胁。当颁布法律规定时，警告、允诺或威胁。当颁布法律规定时，也用也用shall。2）用于第一、三人称疑问句，表示征求对）用于第一、三人称疑问句，表示征求对方的意见。方的意见。will 可表示意愿、常出现的动作，在疑问句中表示请可表示意愿、常出现的动作，在疑问句中表示请求和建议。求和建议。Shall the driver wait outside?司机在外面等着可以吗？司机在

17、外面等着可以吗？It has been announced that candidates shall remain in their seats until all the papers have been collected.已宣布，在所有试卷收上来之前，应试者必须呆在自已宣布，在所有试卷收上来之前，应试者必须呆在自己的座位上。己的座位上。3. 情态动词短语的使用情态动词短语的使用:would like to do 想要做想要做would rather dothan do 宁可宁可也不也不would rather + 从句从句 宁可宁可had better do. 最好做最好做used t

18、o do 过去常常过去常常【知识拓展知识拓展】(1)used todo 过去常常做过去常常做 be used tov.- ing / n. 习惯于习惯于 be used todo 被用来做被用来做(2) used to, wouldused to过去常做过去常做，但现在不做了，但现在不做了，常与，常与like, be等状态动词连用等状态动词连用 would (do)表示表示“过去常作过去常作，但不强调现在，但不强调现在如何，并带有赞扬、厌恶等感情色彩。如何，并带有赞扬、厌恶等感情色彩。4.部分情态动词的问与答部分情态动词的问与答:(1) Need I?Yes, you must. /No, y

19、ou neednt (dont have to).(2) Must I?Yes, you must. /No, you neednt (dont have to).(3) May I?Yes, you may. (=Yes, certainly/of course.)/No, you may not. (=No, you cant/mustnt.)(4)Might/Could I?Yes, you may/can.5. must和和have to用法的区别用法的区别: must表示说话人的主观看法，而表示说话人的主观看法，而have to表示客观的需表示客观的需要；要；mustnt表示表示 “

20、决不能决不能”“”“禁止禁止” “一定不要一定不要”，而，而dont have to表示表示“不必要不必要” (英国英语中常用英国英语中常用neednt) 。Class exercises1.1.（2015福建高考）福建高考）Sorry, Mum! I failed the job interview again.Oh, its too bad. You_ _ have made full preparations. A. mustB. canC. would D. should 2.2.（2015重庆高考）重庆高考）You _ be Carol. You havent changed a b

21、it after all these years. A. must B. can C. will D. shall4. (2014重庆高考重庆高考)Ive ordered some pizza,so we_worry about cooking when we get home tired. A. cant B. dare not C. neednt D. may not3.3.（20152015浙江高考）浙江高考）It was so noisy that we _ _ hear ourselves speak.A. couldnt B. shouldnt C. mustnt D. needn

22、t5.(2014江苏高考江苏高考)It was sad to me that they,so poor themselves,bring me food. A.might B.wouldC.should D.could6. (2014北京高考北京高考)I have a word with you?It wont take long. A.Can B.Must C.Shall D.Should7.（2013新课标全国卷新课标全国卷I）The door open , no matter how hard she pushed.A. shouldnt B. couldnt C. wouldnt D.

23、 mightnt8. （2013重庆高考）重庆高考）What are you doing this Saturday?Im not sure, but I _go to the Rolling Stones concert. A. must B. would C. should D. might9.（2013四川高考）四川高考） Why are your eyes so red? You_ have slept well last night. Yeah, I stayed up late writing a report. A. cant B. mustnt C. neednt D. wont HomeworkReview the grammar of this period.Cease to struggle and you cease to live. Thomas Carlyle 生命不止，奋斗不息。 托马斯卡莱尔