单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,外研小学起点,九年级,(下),Module 5,英语课件,外研小学起点英语课件,1,情态动词,有一定的词义，但词意不完整,不能单独作谓语，必须和实义动词连用,表示说话人对某一动作或状态的态度和看法。情态动词后面跟动词原形，没有人称和数的变化。,情态动词有一定的词义，但词意不完整,不能单独作谓语，必须和实,2,1.can,could,表示能力(体力,知识,技能),常用情,态动词can和could表达。,Can,you lift this heavy box?(体力),Mary,can,speak three languages.(知识),Can,you skate?(技能),此时可用,be able to,代替。,can,只有一般,现在时和一般过去时；而,be able to,则有更多的时态。,1.can,could 表示能力(体力,知识,技能),3,例如：Ill not,be able to,come this,afternoon.(一般将来时),当表示“经过努力才得以做成功某事”时应用be able to,不能用can。,如：,He,was able to,go to the party yesterday evening in spite of the heavy rain.,例如：Ill not be able to come th,4,2)表示请求和允许,-,Can,I go now?,-Yes,you,can,./No,you,cant,.,此时可与may互换。在疑问句中还可用could,might代替，但could,might 并不表示过去式，只是语气更委婉。它们不能用于肯定句和答语中。,-,Could,I come to see you tomorrow?-Yes,you can,.(No,Im afraid not.),2)表示请求和允许,5,3)表示客观可能性(客观原因形成的能力)。,Theyve changed the timetable,so we,can,go by bus instead.,This hall,can,hold 500 people at least.,3)表示客观可能性(客观原因形成的能力)。,6,4)表示推测(惊讶、怀疑、不相信的态,度)，用于疑问句、否定句和感叹句,中。,Can,this be true?,This,cant,be done by him.,How,can,this be true?,4)表示推测(惊讶、怀疑、不相信的态,7,2.may,might,1)表示请求和允许。might比 may语,气更委婉，而不是过去式。否定回答时可用cant 或mustnt，表示“不可以，禁止”。,例如：,-,Might/May,I smoke in this room?-No,you,mustnt,.,2.may,might 1)表示请求和允许。might,8,-,May/Might,I take this book out of,the room?-Yes,you,can,.(No,you cant/,mustnt.),用May I.？征徇对方许可时比较正式和客气，而用Can I.？在口语中更常见。,2)用于祈使句，表示祝愿。,例如：,May,you succeed!,-May/Might I take this,9,3)表示推测、可能性(不用于疑问,句)。might不是过去式，它所表示,的可能性比may小。,例如：,He,may/might,be very busy now.,Your mother,may/might,not know,the truth.,3)表示推测、可能性(不用于疑问,10,3.must,have to,1)表示必须、必要。,例如：,You,must,come in time.,在回答引出的问句时,如果是否定的,不能用mustnt(禁止,不准)，而用neednt,dont have to(不必)。,-,Must,we hand in our exercise books today?-Yes,you,must,.-No,you,dont have to/you neednt,.,3.must,have to 1)表示必须、必要。例,11,2)must是说话人的主观看法，而have to,则强调客观需要。must只有一般现在,时，have to 有更多的时态形式。,例如：His play isnt interesting,I really,must,go now.,I,had to,work when I was your age.,2)must是说话人的主观看法，而have to,12,3)表示推测、可能性(只用于肯定的陈,述句),例如：,Youre Toms good friend,so you,must,know what he likes best.,Your mother,must,be waiting for you,now.,3)表示推测、可能性(只用于肯定的陈,13,用must,have to填空。,1.I know I _ study hard.,2.My mother is ill.I _ look after,her at home.,must,have to,用must,have to填空。musthave to,14,1)Please ask that man.He _ know,that.,2)The light is on,so he _ be at home.,3)It _ be Wei Fang.She is at school,now.,4)Are you coming to Jeffs party?,Im not sure.I _ go to the,concert instead.,may,must,cant,might,can,may/,might,must,表推测,1)Please ask that man.He _,15,4.shall和should,征求对方意见,Shall,we go out for a walk?,What,shall,we drink?,1)shall,2)should,We,should,protect our environment.,You,should,do it better next time.,劝告义务责任,4.shall和should征求对方意见 Shall,16,用shall/should填空。,1.When _ we meet?,2.You _ see a doctor.,shall,should,用shall/should填空。shallshoul,17,5.will,would,1)表示请求、建议等，would更委婉,例如:,Will/Would,you pass me the,ball,please?,2)表示意志、愿望和决心,例如:I,will,never do that again.,They asked him if he,would,go,abroad.,5.will,would 1)表示请求、建议等，wou,18,3)would表示过去反复发生的动作或某种 倾向。would表示过去习惯时比used to正式，且没有“现已无此习惯”的含义。,During the vacation,he,would,visit me,every other day.,The wound,would,not heal.,4)表示估计和猜想,It,would,be about ten oclock when she,left home.,3)would表示过去反复发生的动作或某种 倾向。w,19,should,ought to表示“应该”，ought to,表示义务或责任，比should语气重。,I,should,help her because she is in trouble.,You,ought to,take care of the baby.,6.should,ought to,should,ought to表示“应该”，ought,20,2)表示劝告、建议和命令。should,ought,to可通用，但在疑问句中常用should。,You,should/ought to,go to class right,away.,Should,I open the window?,2)表示劝告、建议和命令。should,ought,21,3)表示推测,should,ought to(客观),must(主观),He,must,be home by now.,(断定他已到家),He,ought to/should,be home by now.,(不太肯定),This is where the oil,must,be.(直爽),This is where the oil,ought to/should be,.,(含蓄),3)表示推测,22,情态动词练习,1.你必须马上回家。,2.他一定吃过什么东西了。,3.吃饭之前不能吃零食。,You must go home now.,He must have eaten something.,You mustnt eat snacks before meals.,情态动词练习1.你必须马上回家。,23,4.我可以问你的名字吗？,5.你能用英语说吗？,6.我们应该准时去上学。,7.你没有必要那么做。,May I ask your name?,Can you speak in English?,We should go to school on time.,You neednt do that.,4.我可以问你的名字吗？May I ask,24,问句及否定回答,1.-Dad,must I finish my homework today？,-No,you _.You may finish it,tomorrow.(2008朝阳),A.neednt B.mustnt C.dont D.wont,2.-May I put my bike here?(2008广安),-No,you _.You should put it over there.,A.may not B.mustnt C.neednt,问句及否定回答1.-Dad,must I finis,25,解答锦囊,掌握情态动词问句的回答：,May I?,Yes,may.,No,mustnt/cant.,Must I?,Yes,must.,No,neednt/dont have to.,解答锦囊,26,表示推测,1.-Is Mr.Brown driving here?(2008安徽),-Im not sure.He _ come by train.,A.may B.can C.need D.must,2.-Whos that boy reading in the garden?,Is it David?(2008重庆),-It _be David.I saw him in the,classroom just now.,A.must B.cant C.may D.neednt,表示推测1.-Is Mr.Brown driving,27,3.Im sure this book _ Li Leis,because there is his name on