2014年高二英语（人教版选修8）教学精品课件：UNIT1 PERIOD Ⅱ.ppt

1、教师用书独具演示教学目标(1)熟记学案中所列出的单词和短语。(2)通过学案中所给出的重点单词和重点短语的学习，让学生能够正确理解和使用这些单词和短语，能够运用这些词语造句。(3)通过对这些词汇的理解能够更深层次的理解课文，并通过课文加深对这些词汇的理解，更加熟练的运用这些词汇。(4)通过对本课文的理解，让学生学会描述某个景点或某个地方的短文等。并培养学生养成自觉用英语写作或思维的好习惯，以提高学生的书面表达能力。教学地位单词和短语是构成句子的最小单位，在语言学习中起着至关重要的作用，所以理解和正确运用英语单词和短语是英语学习的重点所在。新课导入建议As we all know，America

2、is a land of diversity.It is impossible to generalize about America，Americans or the American way of life.Now I want to ask sb.to say something about America，Americans or the American way of life.演示结束1live on 继续存在，继续生存The customs and languages of the immigrants live on in their new home.(教材P1)这些移民的风

3、俗习惯以及语言在他们的新家都得以延续。She lived on for many years after her husband died.丈夫死后她继续活了多年。live on以某物为食；靠某种经济来源生活live through经历过；经历而未死live by doing 靠做某事物为生live a.life 过着的生活live up to遵从；履行；不辜负live with容忍；忍受Most of Asians live on rice.多数亚洲人以大米为主食。She has lived through several terrible accidents.她曾经历过几次可怕的意外事故。

4、【对接高考】(2010湖北高考)Had she her promise,she would have made it to Yale University.Alooked up toBlived up toCkept up with Dcome up with【解析】句意：如果她履行了诺言，她就已经上耶鲁大学了。根据句意live up to ones promise(履行诺言)符合题意，因此选择B项。look up to 仰望，尊重；keep up with 赶上，与保持同步；come up with 想到，提出(主意、观点等)，这三项均不合句意。【答案】B2However，it is lik

5、ely that Native Americans were living in California at least fifteen thousand years ago.(教材P2)然而，很可能至少在15000年前美洲土著人就生活在加利福尼亚了。本句中it为形式主语，真正的主语为that引导的主语从句。句中的likely为形容词，意为“可能的”，常用于It is likely that.“有可能”或sb.be likely to do sth.“某人有可能做某事”句型中。It isnt likely that I should accept such an offer as that.我

6、接受像那样的帮助是不可能的。She is not likely to come next month.她下月很可能不来。likely常指从表面迹象来判断有可能，作“可能的”的意思解释时常用作表语形容词，主要句法结构有：sb./sth.belikelyto do sth.；It is likelythatclause。likely用作定语形容词时常意为“似乎合适的、有希望的”。possible表示客观上的可能性，possible常构成的结构有：It is possible(for sb.)to do sth.；It is possiblethatclause。possible作定语时，有时解释为

7、“合适的”。【对接高考】(2010陕西高考)Studies show that people are more to suffer from back problems if they always sit before computer screens for long hours.AlikelyBpossibleCprobableDsure【解析】likely作表语时，主语既可以是人，也可以是物或it，而possible，probable作表语时，主语一般不能是人。所以可排除B、C。sb.be sure to do sth.某人一定会做某事，在语气上太绝对，不符合句意，可排除。【答案】A【

8、答案】Its very likely that/It is probable that is likely to know3by means of 用办法；借助Scientists believe that these settlers crossed the Bering Strait in the Arctic to America by means of a land bridge which existed in prehistoric times.(教材P2)科学家们认为这些迁居者通过一座史前时代曾经存在的大陆桥穿越北极地区的白令海峡到达美洲。I escaped by means o

9、f a secret tunnel.我通过一条秘密通道逃跑了。by this means用这种方法by all means 一定，务必by no means一点也不，决不(用于句首句子需倒装)by any means 无论如何Try by all means to save the dying.一定要尽力抢救那个垂危的病人。This is by no means the first time you have been late.这绝不是你第一次迟到了。For local people,this is not by any means bad news.对于当地人，这无论如何也不是什么坏消息。

10、【提示】means作“方式，方法”时单复数同形。若是all means作主语，谓语动词用复数形式；若是every/a means作主语，谓语动词用单数形式。【对接高考】(2011浙江高考)Can I come and have a look at your new house?Yes，！Awith pleasureBI like itCI quite agree Dby all means【解析】句意：我可以来看看你的新房子吗？可以，你一定要来。A项：非常乐意；B项：我喜欢；C项：我同意；D项：无论如何，一定，务必。【答案】D【答案】by means ofBy no meansby any m

11、eansPeople who can read and write are not in the majority in some countries.有些国家里能读会写的人并不占大多数。They have a large majority over the other party at the last election.在上次选举中他们以悬殊的票数击败了对方。【提示】a/the majority(of.)表示“(的)大多数”，修饰可数名词，作主语时，谓语用复数，修饰不可数名词时，谓语用单数。the majority 单独作主语时，表示泛指多数，谓语单复数均可。【对接高考】(2011湖南高考

12、)Onethird of the country covered with trees and the majority of the citizens black people.Ais；areBis；isCare；areDare;is【解析】句意：这个国家有三分之一的面积被森林覆盖，并且大多数公民是黑人。“分数词of名(代)词”作主语，谓语动词的单复数取决于该名(代)词的单复数，所以第一空用is；the majority of 后是the citizens，所以谓语动词用复数，所以第二个空用are。【答案】A5That is why today over 40%of Californians

13、 speak Spanish as a first or second language.那就是为什么今天还有超过40%的加利福尼亚人仍然把西班牙语作为第一或第二语言的缘故。that is why.表示“那就是的原因”，why引导表语从句。That is why I came back.这就是为什么我回来了。That is why she is so happy.那就是她为什么如此高兴的原因。That is because the bill is not much loved.那是因为这一法案并不招人喜欢。That is where I was born.这就是我出生的地方。That is w

14、hen the fighting will probably start.那就是战争可能开始爆发的时刻。【答案】That is why we should do good(things)That is because our economy is in serious trouble.The reason why he failed is that he was too proud.6make a life习惯于新的生活方式、工作等，开始新生活Some died or returned home,but most remained in California to make a life fo

15、r themselves despite great hardship.(教材P2)有些人死了或回家了，但是大多数人尽管困难重重，还是留在了加利福尼亚谋生。They settled down in Canada and made a life for themselves.他们在加拿大定居下来，习惯新的生活方式。bring.(back)to life 给某人/事物活力；使复活come to life 苏醒live/lead a.life 过着的生活It was an opportunity to make a better life for herself.这是使自己能更好生活的机会。Gene

16、rally,I think the elderly people live a happy life,but they are sometimes lonely.总的来说，老年人过着非常幸福的生活，但是他们有时有些孤独。7elect v选择，决定做某事(后常跟不定式)；选举，推选By the time California elected to become the thirtyfirst federal state of the USA in 1850，it was already a multicultural society.(教材P2)到1850年加利福尼亚成为美国第31个州的时候，它

17、已经是一个有着多元文化的社会了。We elected him(to be)monitor.我们选他当班长。I elect to stay.我决定留下来。He was elected as a new leading post.他被选到新的领导岗位。We elected him chairman.我们选他当主席。【提示】表示“选举”，主要指选举某人担任某职位。若所涉及的职位独一无二，则通常不用冠词。【答案】choseselectedelected8percentage n.百分比，百分率(常用high，low，small，large修饰)Today，ChineseAmericans live i

18、n all parts of California,although a large percentage have chosen to stay in the“Chinatowns”of Los Angeles and San Francisco.(教材P2)今天，加利福尼亚的所有地区都有美籍华人，尽管有很大比例的华人还是选择住在洛杉矶和旧金山的“中国城”。A high percentage of the college students have parttime jobs at home and abroad.不管是在国内还是在国外，很大比例的大学生一边学习一边打工。What is th

19、e percentage of nitrogen in air?空气中所含的氮的比例是多少？【提示】percentage前不用具体的数字修饰，但可以被high,low等形容词修饰。percent百分之，相当于“%”，其前面往往用具体数字修饰。“a percentage of n.”在句中作定语时，谓语动词的单复数根据名词的单复数形式而定。【答案】percentagepercentpercentage9keep up坚持；维持；沿袭(风俗、传统等)In 1911 immigrants from Denmark established a town of their own,which today

20、 still keeps up their Danish culture.(教材P2)从丹麦来的移民在1911年建立了他们自己的城镇，今天它仍然沿袭着他们的丹麦文化。I hope the fine weather will keep up.我希望好天气能保持下去。Do you still keep up your Spanish?你还坚持说西班牙语吗？keep up with 跟上(某人/某事物)；(与某人/某事物)同步前进或保持联系；跟上(形势)keep(on)doing继续做；重复做keep away from(使某人/事物)不靠近某人/事物keep in touch with保持与某人的

21、联系keep oneself/sb.from(doing)sth.使自己/某人不做某事keep sb./sth.out(of sth.)不让某人/物进入(某处)We have to work hard to keep up with these excellent students.为了跟上那些优秀学生，我们得努力学习了。They kept on working after dark.天黑了他们还继续工作。Children should be kept away from the river.不要让孩子们靠近这条河。【对接高考】(2012湖北高考)Walking alone in the da

22、rk，the boy whistled to _ his courage.Ahold upBkeep up Cset upDtake up【解析】考查动词短语辨析。句意：独自一人在黑暗中走，那个男孩吹口哨给自己打气。hold up举起，耽搁，延迟；keep up保持，维持；set up建造，创立；take up占据，开始从事。keep up ones courage 保持勇气，鼓起勇气。【答案】B【答案】upwithawayfrom10 It is believed that before long the mix of nationalities will be so great that

23、there will be no distinct major racial or cultural groups,but simply a mixture of many races and cultures.(教材P3)人们认为，要不了多久，多种国籍的混合将会非常之大，以至于不可能存在一种主要的种族或文化群体，而只是多种族、多文化的混合体。这是一个主从复合句。it为形式主语，真正的主语为第一个that引导的主语从句。本结构为Its 过去分词that.。常用于此结构的动词有：say，report，think，hope，suggest，believe，know等。Its said that t

24、he writers writing a network novel.据说那位作家正在写一本网络小说。Its reported that two people were injured in the accident.据报道这次事故中有两人受伤。此句型可改写为sb./sth.be 过去分词 不定式结构。(要注意不定式有一般时，进行时和完成时三种形式)Its believed that working hard can lead to success.Working hard is believed to lead to success.人们相信勤奋工作就能成功。It is thought th

25、at she survived the crash，but we cant find her.She is thought to have survived the crash,but we cant find her.人们认为她在飞机坠毁后活了下来，但我们找不到她。【答案】It is thought that everyone should form good habits when they are still young./Everyone is thought to form good habits when they are still young.Its said that he is doing They are reported to have found