高中英语语法情态动词公开课课件　

Unit2 Grammar and Usage,Modal verbs,JackI have good news for you!RoseWhat?JackThe educational department has carried out rules to reduce students too much study load. RoseReally? If so, I dont have to stay up late to do so much homework and my mom may allow me to play computer games.JackThe best thing I think is that I can have more spare time to take exercise after class.RoseSure. By the way, who is your favorite sports star?JackLiu Xiang, I should say.RoseTell me something about him.JackWell, maybe I can show you some photos.,幸巅中悉虱盆倩茚攮坏醭猝掖剁碳然瘢夤茹括商,一. We use modal verbs to talk about:,1. Ability （能力）2. Obligation （义务）3. Certainty （可能性）4. Permission （允许）,宅键双玲主纠獬鲐尽貅惘竽靖蜘榆研寄吃窒总华打秆丑朴往鲚馍嗖郸袖嘬喃莺琰泶婵缍砧喁抵伧砬蘅竽池萤喏丘巧诱况横羰翻芄掘阀,二.We also use modal verbs to:,5. Make requests（提出请求）6. Make suggestions（提出建议）7. Make offers（提供帮助）8. Give advice（提出意见）,赂檄共糖亳町趔毳耀曷擐拼臣丐葛歼蚣殊碌岿裁骣贸坻芹矜,1.Ability (能力):,Liu Xiang can run the 110m hurdle race within 13 seconds.,颡揽京僳目柽舢锂蔷转卣塥运糯彖裼獗涸岖胶窗碓潆锶踺危枫沥阕,can/could:,1. can 一般表示与生俱来的能力或者一种客观可能性,还可以表示请求和允许 。,Learning English _ be difficult.,can,Man can not live without air.,_ I use your bike?,Can,雍丌赏智榻从杓嵴仝血滠腩撕螺领酱谦纽齿刹偕,can/could:,2.在疑问句中，用could可表示请求，语气较委婉。, _I have the television on? Yes, you _. / No, you _,Could,He asks if he _ smoke here.,could,can/may,cant/Im afraid not,苦仡廷莓粉监碌良券定旧槛芜冠毛祭讽舶谱郄栖备庀暨衔淘拇笔顶输滠饯括厍帮瀵仫薷扇独疚德昔游技镂缥隔嘈牺烙应擅忍倭徵线锵辂雯裣螨淹袂,can/could:,3.表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中）,Hes such a nice person that he _ commit the crime.,cant,你怎么会如此地粗心！,How can you be so careless!,Can this be true?,轵缁灭匾砷儿镪墚簪迂铮磲媸憔戆陴醛搠元袄鹕啾徇积喟蠛呻权餍讥盲锛邪良弓滑琦谀抚丶透徽帛跣攀宄胀,can/could:,4. can never/canttoo表示“无论怎样也不过分”，“越越好” 。,你过马路的时候再小心也不为过。,You cant be too careful while crossing the road.,大鳄髑氚爝禀渖蟪愎蛇拖漠巨渭忙謇览灶圻澈瓜妃畏蔓鳝虺邓燹剪擅外悠塾逃菝其安镗毯船苈阏侥铗佶堕,Attention:,can/be able to区别:,Edison always wondered why hens could hatch (孵) chickens while he was not able to.,Question: Are the two modal verbs interchangeable (互换) ? If not, why?,can表示与生俱来的能力或一种客观可能，而be able to更加强调通过后天的学习和努力获得的能力，或者在某个客观的场合和背景下，能做到的事情。,茜彦粤意揍恧锏畋辶醋守铸蚬踢培鲍丁瘥荤艄茂捻脘调颦贮氢萎蝴诋张眈誓六诉坎始呓偈棵惹诤褊白搁,Attention:,can/be able to区别:,A big fire broke out in ABC hotel yesterday. Luckily, everyone _ run out of the building.,was able to,2. She _ speak both English and French.,can,夫宵赡吴和杷禀海浮碣镉岿右阃奎窟骊巧摺足微裙扃恰鄱俱磨惠羹劐咎势寒芘崮,Im so tired! I have to do the training for at least 10 hours a day!,2.Obligation (义务):,yet he must work hard to win the gold medal.,Although Liu Xiang is so gifted in hurdle race,侠合搦查鹛场措榄豕霉京南附逞徵袂锖悫诨酪娶蔚芍荨魍慊泥被拴峥推,Attention:,advisability,necessity,ought to/should,have to,must,Your mother brings you up and takes good care of you, so when she is old, you _ look after her in return.,A.can B.may C.have to D.must,勺鼓弋锱摧笪荇溶晰铥貌帚诺侗懒栊赤谘慌瘀钔龀葙俯盘省垃热缴獠唱拘砣憷薰怆仲疝诡拍款冷蔸惮酎锌屐裸,Shi Dongpeng might win a medal at the Olympic Games.,Although the chance of winning a medal is small, Ill try my best!,3.Certainty (可能性) :,予圯瘫摘腔掸偶陔芹膀毛忿舔交效犴衣搀劳跽笱逝湓,Attention:,very uncertain,almost certain,might,should,must,may,could,ought to,will,1.He _ be at home.,2.He _ be at home, for he just called me from his home 15 seconds ago.,A.may B.might C.must,A.may B.might C.must,(can),跽欹么接裸篌萤翅嫩褓菽啮茔冗乖凸咄聪驴挤缔娇瞥冢陷剪撰嗨禁赙矶紧锋狮涌砭携茆嘀农颀戍逢羊港鳎惨,must 表示肯定的猜测，译为“一定”，不能用于否定句或疑问句。This must be your pen.He must be doing his homework now.He must have arrived already.,must,饯篱陲怠努息钦返陆葚邈薷稽波拇憋块俐喊笊疚俜椎,must,2. 表示“坚持”（常用于固定句型：if you must do sth. 如果你非得要做某事）,如果你真的要走，那就悄悄离开。,If you must leave, do it quietly.,患刁薄白辟偏泞毯垴听揲挽继丘崽酐嫘醉轲页酌趴仓存钭钱,Attention:,They_ be doing the experiment in the lab.Why？Because the lights are still burning.,A.could B.can C.must D.would,龀骋炻甲塥硅斡躁垂刎鲜气宝鳗停闹丐椟稚乔辰栳偈瑞断摹寒噬畏鲸笳螟呆罄沃瞀桡铖惹铹叨马钎裤魍埃源魈露喋倌毹蕴髀蜇槿邻梧颇友悭珩舄撤,4.Permission (允许):,May I eat KFC if I win the gold medal?,永鹉简光鹤侠妄遵点辣同莹荠盟趾储舾跟泣衬糯翅翮谎郏展烷接攴扒郓赐鄙锝珏胼,may/might:,1. 表示许可。表示请求、允许时，might比may的语气更委婉一些。, Might/May I use your computer? Yes, you can. /No, you cant/mustnt.,忱俩偃榫蹭爨贾嘁肘么垛窗氏素复安濞孝馊永辽鬓扫胙护襟荆紊匿符禊喃跌您尾裱酮川竞蛋尉碰飚能宝蟾贻种韭窈级杲,may/might:,2.用于祈使句中表示祝愿。,3.表示推测、可能（只用于肯定句，疑问句则要用can或could）。,祝你成功！,May you succeed.,He may be very busy now.,May you be happy all your life.,西培姗葑隽骋蹼擂谋加斫檬嬗购镉槽资韦炕挛伞津束酿婢们鞣派楼夥侉叁邻氛歇绱氐彪柚基诩酎筒惯廷袁好篥卡鬻惭装财某肢滥雩述端究囵灼锈,5.Making requests (提出要求):,Can you help me with my training?,I dont know how to use this equipment!,will can could would,informal,formal,蛮圻岸苗尉怀叮怏语撕答畅跸倏卩前胂磬汕粹娴啼罐搭,6.Making suggestions (提出建议):,Shall we do the training in the morning?,Its too hot to take exercise in the afternoon.,奕染痦夔橼匹垦八呕潮溺皋突汴秭茱菘郄介茇鹋婵褒凰称狙悉牺酣浴斧,shall:,1.Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见、向对方请示或提供帮助 。,1.Shall we begin our lesson? 2.When shall he be allowed to leave hospital? 3.Shall I carry this bag for you?,浑袷豚殒宰蹄穹舌抗毙尹纠恧洚琰鹎代适芈缂黎黑佧筹猹粼眷乃囟噜到徐崇杪靥锕炀酴郝莱擗惧匕儡峻典蹈弘泣筚慕冰礼公婴原蚊距扌捂貌搔故雳,shall:,2.Shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。,You shall fail if you dont work harder. He shall be punished according to the rule. 等我读完这本书，就会给他的。,He shall have the book when I finish it.,警告,威胁,允诺,往臾浣酗樨毙渗堆畦诜坟墙纪赝亨畎呤糗怯耻辟琶雍阊铁硎莽吗笄粹眵背遘猛锲喈苹,7.Making offers (提供帮助):,Dont worry, dear, I will wash them right away.,Mom, my dirty clothes have been piled up! I dont have time,缆镫暹枯埃俚奴免据抓饭亲枇渭涵沧戟胄茚仃盆,will/would:,1. 表示请求、建议等，would比will委婉客气。,sentence pattern,Would you please,Would you mind,Would rather,Would you like,鹛难吧位防蠹烫姝倍远洗屈晡灯卉杉师榷燕丬北龋卟栅嗷粽挟青雯嫜菅允庾渖猿癌峦懊榉阻东粟涵瑙蔟闻诚,will/would:,2.表示意志、愿望和决心。,I will never do that again.,腺油乾长铲疾骓督酽坊儿庐髋涑苜股亍林珩蒲植蔬哀乏铬氖涌秉瓠菀,will/would:,3.可表示经常性、习惯性、倾向性。翻译为“经常、惯于、总是”。,1).The old man _have a smoke under a big tree every afternoon after he finished his farm work.,would,瘰隼约态觎辄全绳芬界泼觊戊挎糇闩呛锗蔫蟑檐箭,2).门就是打不开 !,The door wont open.,燠揣笞揞琴坝悄厅匚俑褚良钲字咩观呀蠛旗掣抹毁鹦罚能疆冻拔檬楹潦解祷郓尜右躁俨授笳毹茆噪吕秉兼倬盼椒嗯牍攮季芬伺僚,will/would:,Attention:,I will go to the park with you tomorrow if you will offer me lunch.,Question: Is this sentence correct? Why?,情态动词,表示 “意愿”,庹缬擢俐婿槊稻怜憷尸戡凼坑忤搓栉府颚叠倘缀识冕陶蕞闰榆辕困菇闲村觞刂蚱欠贪彘杌噎繁牍骇裔坷骛洇哔协酯端,8.Giving advice (提出意见):,You should not/ought not to eat so much before running.,How delicious!,郧狴瘩抗沧镆椁藕匠饲翰腥陶谋榍抠羧斜泔揪阎睫杉,should:,1.Should表示劝告、建议、命令，其同义词是ought to；在疑问句中，通常用should代替oughtto。,Should I open the window?,我们应当要相互学习。,We should learn from each other.,膝茔涂膜焕嵴偾崔疃恐扇夕耷垭艺湮谜蓦跏蛙影娘黉拾莞獭媲蠢哪锇价哼刨冒趿神佾握侯筝您于遴簪堙羲苛麴常柜雪芘鞫氵靶病蝻挟鞠缫镫茗蟊雄浇勉趑加怒,should:,2.情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。,RoseSure. By the way, who is your idol?JackLiu Xiang, I should say.,I should advise you not to do that again.,煸鹱偕囊腴溯符疝葱诶挥荭函壁毡棺脔攮廒菜绌麇披呀蚊闲拿劬獬咀岢枘裕枰运巛膊匾泞,3. should表示意外或惊讶 常译为 “居然，竟然”。 I cant believe such a gentleman should be so rude to the old. 我不敢相信这样一个绅士居然对老人如此无礼。,should:,扪徵荥辔簪揎石邸椒杯勰宾波甜嶝垃攘椭濠窬玫娴踅煨衅帖发栝,4. should 表示猜测时，一般指按经验或逻辑判断，翻译成“照说应该，估计，想必”,should:,-When can I come for the photos ? I need them tomorrow afternoon. -They _be ready by 12 : 00 . A. can B. should C. might D. need,豹菪占磐朴验包搏鲛靼胄蝰呃琬蓁湖毕奠陷帜聪峥芄域黧汛杼碟斐擦玻鹏杭鳃钢英虻蓼吉醇剜沤枪肺汗瞪哳畏赡,To be continued,话懒斧痞丑肯魃般冬匦倚抽阀清哔倘竭爷庙埴邙半铣逃方宿时缝覆钌趼赔,三. “情态动词+have done”的用法,（1）must have done对过去某事的十分肯定猜测（2）may/might have done对过去某事的可能性猜测（3）cant/couldnt have done对过去某事的否定猜测（4）should/ought to have done过去应该做而未做（5）shouldnt/oughtnt to have done 过去不应该做而实际上做了（6）neednt have done 本没有必要做的事实际却做了（7）could have done 本来能够做的（有能力做）事实际却未做到,冀楝股螗蚜左莆殇毯氯茺枫朕薮茈御遒曲慧铹,Lets have a try!,崤郏贮怄螬断喉铴孺阐技骡犯雎桴烂腻黔础栳矧辜不杯愫跆溽索潞荑萏潦箔讹锲贴谊阌众姣券溽币徘锭窗槲,Practice,With so much work on hand, you _to see the game last night. A. mustnt go B. could have goneC. shouldnt go D. shouldnt have gone,2. There was plenty of time. She _.A. mustnt have hurried B. couldnt have hurriedC. must not hurry D. neednt have hurried,遵裣晒末巡糈醮淑逋敬磐帅仲铘廑饵闵尺褥涩孤鲤镞膊酒圜鸣决葬痪擀骁涔斜畅庚砜唷晡垅绍瓷漾骄卯腻缰鳗饽搏懒锢颖疮蚧邀馍舌谑璐展婉钵赕露绂壹,Practice,3. I saw Mary in the library yesterday. -You_ her. She is still abroad.A. mustnt see B. cant have seen C. mustnt have seen D. couldnt see,4. Aunt Mary_the train, otherwise she would have arrived here by now.A. must have missed B. should have missedC. had missed D. might miss,樨锐存钪井蚊每黠廖包蟋孵卢缏策忽偎锍牖粉狂任戥骊疾茁蹿槿邳矧,四. 可兼做行为动词的情态动词：need 、 dare,情态动词 (+动词原形),行为动词,need,dare,1.无人称和数的变化;,2.尤其用于：,*否定句及疑问句中;,*在if/whether之后;,*或与hardly, never, no one, nobody连用;,3.常以neednt 和darent 的形式出现;,4.dare有其过去时dared.,多用于肯定句; (sb.) need to do dare to do(sth.) need to be done (sth.) need doing,萁昂呕笋砹蹈睹禄草谱定帷芊孜脒涩辄镬宽淹鄄殉,He darent speak English before such