1、Section Grammar 情态动词()语法图解探究发现Festivals can also be held to honour famous people.Some festivals are held to honour the dead or to satisfy the ancestors,who might return either to help or to do harm.Most ancient festival would celebrate the end of cold weather,planting in spring and harvest in autumn
2、.For the Japanese festival Obon,people should go to clean graves and light incense in memory of their ancestors.我的发现以上四个句子都使用了动词。其中，第句中的 can 表示许可，意为“”；第句中的 might 表示推测，意为“_”；第句中的 would 表示过去习惯性动作，意为“_”；第句中的 should 表示劝告或建议，意为“”。情态可以可能会过去常会应该一、基本特征1情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。The idea that comput
3、ers can recognize human voices surprises many people.电脑能识别人的声音，这种想法使很多人感到吃惊。They must be in the classroom.他们一定在教室里。2情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。Mary can speak three languages.玛丽会说三种语言。I could drive a car before I left school.毕业前我就会开车。3构成否定句时，not 放在其后面。My brother cant swim.我弟弟不会游泳。4情态动词后接动词原形
4、。You will do as I told you.你得照我说的去做。He might come tomorrow,but I am not quite sure.他可能明天来，但我拿不准。即时演练 1 单句改错We should to study hard for our motherland and ourselves._She can sings that song in English._This book doesnt must be removed from the library._二、基本用法1can 与 could 的用法(1)表示能力：can 用来表示现在的能力，coul
5、d 表示过去的能力。I can play basketball now,but I couldnt when I was young.现在我会打篮球了，但小时候我不会。去掉 tosingssingdoesnt mustmustnt(2)表示请求和许可：could 语气比 can 委婉，但回答时只能用 can。Could you show me the way?Yes,I can.你能否告诉我怎么去？可以的(没问题)。(3)表示推测，意为“可能”。多用于否定句或疑问句。That cant be Mary shes in hospital.那不可能是玛丽她在住院。(4)表示理论上或习惯上的可能性，
6、意为“可能会”。Scotland can be very warm in September.九月的苏格兰可能会非常暖和。辨析 can用于指现在，常表示自身具有的能力could用于指过去，常表示泛指过去的能力be able to用于各种时态，表示经过努力后所具有的能力I can/am able to reach the apples.我能够到苹果。When I was young,I could climb any tree in the woods.在我小时候，树林里的树我都能爬上去。He will be able to tell you the news soon.他很快就能告诉你消息了。
7、即时演练 2 选出下列句中 can/could 的含义A表示能力 B表示推测C表示请求和许可D表示理论或习惯上的可能性Look!Someone is coming!Who can it be？I can speak English fluently while he cant.Even an experienced doctor can make a mistake.Could I use your computer?Yes,you can.BADC2may 与 might 的用法(1)表示征求对方的许可或允许对方做某事(不用 might)。May I come in?Yes,you may(
8、can)/No,you cant.我可以进来吗？是的，你可以进来。/不行，你不能进来。You may come if you wish.如果你想来，你就来。(2)表示推测(把握不大)，意为“可能”，多用于肯定句。Might比 may 可能性更小。Anna may know my phone number.安娜可能知道我的电话号码。It may/might rain this afternoon.今天下午可能会下雨。(3)may 用于祈使句，表示祝愿。May you succeed!祝你成功！May you have a good journey!祝你旅途愉快！即时演练 3 完成句子A one-
9、hour walk lose a few pounds in a single day,but its long-term health benefit can never be ignored.每天一个小时的散步也许不能使你在一天之内减掉几磅，但是它长期的健康益处绝不能被忽视。Life is unpredictable;even the poorest _.生活是不可预料的，甚至是最贫穷的人也可能成为最富有的人。may not help youmight become therichest3will 与 would 的用法(1)表示意志或意愿，意为“会；想；要”等。多表示从主语的主观意志出发
10、，愿意做某事。If your father will go climbing,please take him there if you are free.如果你父亲愿意爬山，你有空的话，带他去那里。I would like to have a word with you.我想跟你说句话。My parents wont allow me to stay out late.我的父母不会允许我在外待到很晚。(2)表示请求或建议，多用于疑问句。would 语气更委婉。Will/Would you tell me how to get to the shopping mall?你可以告诉我怎么去购物中心
11、吗？Would you pass me the bottle?请你递给我那个瓶子好吗？(3)表示习惯性动作或客观真理，意为“总是；老是”。will表示现在，would 表示过去。She will listen to music alone in her room for hours.她独自在房间里听音乐，一听往往就是几小时。Oil will float on water.油总是浮在水面上。He would be nervous when he met strangers.遇见陌生人时他总是很紧张。辨析 would表示过去反复发生的动作不强调现在还是否经常发生used to表示过去常常做某事，但
12、现在不这样做了He would go to the park as soon as he was free.过去，他一有空就去公园。(动作反复发生，现在还有可能再去)People used to believe that the earth was flat.过去，人们总以为地球是扁平的。(表示过去的动作，但现在已不再这样认为)即时演练 4 完成句子She doesnt get up so early.她不像以前那样起得那么早了。She said that she.她说她会买一辆汽车。the window for me?请你为我打开窗户好吗？As is known to all,fish wi
13、thout water.众所周知，没有水鱼就会死。as she used towould buy a carWould you please open/Would you mind openingwill die4shall 与 should 的用法(1)shall 用于疑问句中多表示征求建议，主要用于第一、三人称。Shall he come to see you?要他来看你吗？(2)shall 用于肯定句中多表示说话者的允诺、告诫、威胁、命令、规定、必然性等，主要用于第二、三人称。Persons under 18 shall not be employed in night work.不满十
14、八岁的人不得雇用做夜间工作。(3)should 表示劝告或建议，意为“应该；要”。You should do as I told you.你应该照我说的去做。(4)should 表示义务或责任，意为“应该；理应”。We should learn from each other.我们应该互相学习。(5)should 表示推测，意为“应该；可能”。She should pass her chemistry final.她应该能通过化学期末考试。(6)should 表示惊讶或意外，意为“竟然”。Its strange that he should come so late.他竟然来这么迟，真是奇怪。
15、即时演练 5 单句改错What will I get for dinner？_Shall you swim across the river？_Passengers can not talk with the driver while the bus is moving._willshallShallCancanshall5must 的用法(1)must 表示命令或强烈的建议，意为“必须”。You must practice your spoken English if you want to improve.如果你想提高，就必须练习英语口语。(2)表示十分肯定的推测，意为“一定；准是”；其否
16、定结构mustnt 表示禁止，意为“不准；禁止”。Jack and Dick must be twins.They look so much alike.杰克和迪克准是双胞胎，他们长得太像了。(3)表示说话人的一种态度，意为“偏要；硬要；偏偏”。Must you make so much noise when I have a rest?你就非得在我休息时弄出这么大的声音吗？The car must break down just when I was about to start.我正要出发时车偏偏抛锚了。点津 回答 must 问句时，肯定回答多用 must；否定回答多用neednt 或 d
17、ont have to。Must I finish my homework before eight oclock?Yes,you must.(No,you neednt.或 No,you dont have to.)我必须要在 8 点之前完成作业吗？是的，必须。(不，没必要。)即时演练 6 完成句子If you,at least wait until the storm is over.如果你非要走的话，至少要等暴雨停了再走。She after such a long walk.走了这么长的路，她一定累了。must gomust be tired链接高考完成句子1(2019全国卷)If ac
18、cepted,I _,which can help them know more about Chinese culture.如果被录取，我可以向参观者介绍中国画的技巧，这能帮助他们了解更多的中国文化。2(2019全国卷)So significant is the game that it is required that everyone _ punctually.这次比赛如此重要，以至于要求所有人都应该按时出席。can introduce Chinese paintingskills to visitorsshould present themselves3(2019全国卷)To sum
19、up,I wish you _ the expectations of our school.总之，我但愿你能不辜负我们学校的期望。4(北京高考)In todays information age,the loss of data _ for a company.在今天的信息时代，数据的丢失有时会给一个公司带来严重的问题。5(江苏高考)Kids shouldnt have access to violent films because they _ they see.孩子不应该接触暴力电影，因为他们也许会模仿他们所见的事情。could live up tocancause serious pr
20、oblemsmight imitate the things6(天津高考)At first Robert _ his daughter go diving,but eventually he gave in as she was so confident about her skills.起初，罗伯特不愿让他女儿去潜水，但最终他让步了，因为她对她的技能是如此的有把握。7(北京高考)Samuel,the tallest boy in our class,_ the books on the top shelf.Samuel 是我们班最高的男生，能够轻松地够着书架顶上的书。wouldnt letc
21、an easilyreach演练提能.用适当的情态动词填空1Can you imagine that he speak to his mother like that?2The boy go home now.Dont worry.3 I use your mobile phone?4 I let him in,Madam?5May I use your computer?No,you.6Mary play the violin when she was five.shouldmustCan/CouldShallcantcould7I hope the weather be fine and
22、you have a good time.8He go with you;he has to study up tonight.9She turn to me when she was in trouble.10If someone had tempted to save him,he not have drowned.willwillcantwouldmight.完成句子1_祝大家开心！2I havent seen Alice for several years.She _now.我有几年不见爱丽丝了。现在她一定是个大姑娘了。3Mike the classroom now.I saw him
23、 playing basketball on the playground a moment ago.迈克现在肯定不在打扫教室。刚刚我看见他正在操场打篮球。May everyone be happy!must be a big girlcant be cleaning4This kind of kite made of silk,so dont worry about it.这种用丝绸制作的风筝不容易撕破，因此不用担心。5This disabled bird cant fly.这只残疾的鸟不能飞。你能帮帮它吗？6I hope you.我希望你能理解我。wont be easily tornCo
24、uld you help it?can understand me7At the same time,I to go over my lesson.同时，我不会忘记复习功课。8My mother gave me a hug and I in her eyes.我妈妈给了我一个拥抱，并且我能够从她眼中看出满意。9I my thankfulness to Jack for his kindness.因杰克的善良，我一定要表达对他的谢意。10We if we cant always be encouraging when we speak.当我们说话时，即使不能一直鼓励他人我们也应该避免伤害(他人)
25、。will not forgetcould see satisfactionmust offershould avoid hurting others.用适当的情态动词完成下面语段Miss Fang 1._(not)read for very long with her eyes hurt.Her mother told her that she 2.go to hospital and see a doctor.“You 3.see a doctor as soon as possible，”her mother said.“You 4.have poor eyesight.”When Mi
26、ss Fang had free time,she went to hospital.The clerk said that the doctor 5.see her at 3：30.Miss Fang replied that she 6.not be able to be there at 3：30 because she had a class then.“The doctor 7.see you at about ten to four，”the clerk suggested.“8.I arrange the examination at about ten to four,or 9
27、.you rather come tomorrow？”couldntshouldshouldmay/mightcouldwouldmay/mightShallwouldMiss Fang thought she 10.(not)waste any more time.The teacher 11.(not)be unhappy if she asked for permission to leave the class a little earlier,as he was always so kind to everyone.And she replied,“I think I 12.make it at about ten to four.”Miss Fang went to the class.She asked her teacher，“13.I leave at 3：45 today?My eyes hurt and I 14.have an eye examination.”As expected,the teacher said,“Yes,of course you 15.”shouldntcanMay/Can/Couldmustcan/mayshouldnt谢谢 观 看