1、课前自主学习课堂互动探究话题美文欣赏Module 5A Lesson in a LabElectronic devices(装置)are changing the way people listen to music.But studies show the devices may be causing hearing loss in many people.Some experts say people may be playing them too loud and for too long.And experts say sound levels on these devices nee
2、d to be set lower.课前自主学习课堂互动探究话题美文欣赏Researchers did a study with three hundred high school students and one thousand adults.They were asked about their use of portable music devices.Forty percent of the students and adults said they set the sound levels at high on their players.But students were twi
3、ce more likely to play the music at a very loud volume(音量)More than half of the students said they would probably not limit their listening time.The study found that more than half of the students and less than forty percent of the adults had at least one kind of hearing loss.Some reported difficult
4、y hearing parts of a discussion between two people.课前自主学习课堂互动探究话题美文欣赏Others said they had to raise volume controls on a television or radio to hear it better.And，some experienced ringing in their ears or other noises.Hearing experts say part of the problem is the listening equipment people are using
5、.They say large earphones that cover the whole ear are probably safer than the smaller earbuds(耳塞)that come with most music players.Hearing loss may not be obvious for years，however，once it happens，there is few chance of curing.Aboutthirty million Americans have some hearing loss.One third of them l
6、ost their hearing as a result of loud noises.课前自主学习课堂互动探究话题美文欣赏The American SpeechLanguageHearing Association is working with companies and government officials on setting rules for use of portable music devices.The group says the best way to protect your hearing is to reduce the volume，limit listen
7、ing time and use ear phones that block out foreign noises.课前自主学习课堂互动探究话题美文欣赏1佳句仿写一二三我不喜欢他和妈妈说话的方式。_多于30%的委员会成员说他们反对这项计划。_I dont like the way he talks to his mother.More than 30 percent of the members of the committee said they were against the plan.课前自主学习课堂互动探究话题美文欣赏2翻译佳句，放眼高考Hearing loss may not be
8、 obvious for years，however，once it happens，there is few chance of curing._听力损伤也许多年都不被察觉(表现不明显)，但它一旦发生，就几乎没有治愈的机会。课前自主学习课堂互动探究话题美文欣赏Period OneIntroduction，Reading and Vocabulary单词识记1_/lIkwId/n液体2_/Ikspnd/vi.膨胀3_/kntrkt/vi.收缩4_/sbstns/n物质5_/mIkst/n混合物6_/ksIdn/n氧气.liquidexpandcontractsubstancemixtureox
9、ygen课前自主学习课堂互动探究话题美文欣赏7electricity/I lektrIsItI/n._8stage/steId/n_9conclusion/knklu：n/n_10.aim/eIm/nv._11.reaction/rIkn/n._12.electrical/IlektrIkl/adj._电 阶段 结论 目标，目的 反应 用电的；与电有关的课前自主学习课堂互动探究话题美文欣赏短语天地1_大众科学2_在的顶部3_在的底部4_使有条理5_得出结论6two thirds_7for example_8do/make an experiment_9a mixture of_10think
10、of_.public scienceat the top ofat the bottom ofput.in orderdraw/reach/come to/arrive at a conclusion三分之二 例如 做试验 的混合物 想起；考虑课前自主学习课堂互动探究话题美文欣赏语境助记Recently we made an experiment.Our aim is to test if a substance expands when hot and contracts when cold.At the first stage,we prepared some materials for
11、the experiment,such as a cup of liquid,a nail and electricity.We put everything in order.We designed a table.At the top of table is some instructions about the experiment.About two thirds of the students did the experiment.At last we arrived at a conclusion and write it down at the bottom of the tab
12、le.课前自主学习课堂互动探究话题美文欣赏.句型搜索1It is hard to think of a world without metals.信息提取it作形式主语，不定式作了真正的主语。例句仿写 很难想象一个没有电的世界。_for us_aworld without electricity.2Twothirds of the earths surface is water.信息提取考查主谓一致和分数的表达法，of后面的词是单数或不可数名词时，谓语动词要用单数。例句仿写 我们班五分之三的学生是女生。_of the students in our class_girls.to think o
13、fIt is hardThree fifths are课前自主学习课堂互动探究话题美文欣赏3.Below is a description of a simple scientific experiment.信息提取本句是倒装，主语为a description,is below 是系表结构。例句仿写 下面是我们即将讨论的问题。_that we are to discuss.Below are the questions 课前自主学习课堂互动探究话题美文欣赏预读理解 1Choose the best answer.(1)Which of the following metals reacts t
14、he most with water?ACopper.BIron.CAluminium.DSodium.(2)When heated in oxygen，_will react partially.Azine Bcopper Cpotassium Dall metals(3)According to the passage,it can be inferred that_will have less use in making kitchen tools.Aaluminium Biron Csteel Dcopper.课前自主学习课堂互动探究话题美文欣赏(4)“Airfree water”me
15、ans_.Aair with a lot of water Bair without a lot of water Cwater with a lot of air Dwater without air答案(1)D(2)B(3)A(4)D课前自主学习课堂互动探究话题美文欣赏2 Read the passage again，and do the following exercises.(1)In Passage A,metals can react with_.(You can write down three or more substances.)_(2)From Passage B,if
16、you want to write an experiment report，what should you consider?_Aim，apparatus，method，result and conclusion.oxygen，water，steam，etc.课前自主学习课堂互动探究话题美文欣赏(3)Find out a sentence from Passage B，which has the similar meaning with the following one.“It can stop the air entering the water.”_(4)Translate the f
17、ollowing sentence into Chinese.The reaction of metals with these substances can be put in order._This will keep air out of the water.(不同的)金属与这些物质的反应程度可以按顺序排列起来。课前自主学习课堂互动探究话题美文欣赏mixture n混合物；混合状态This cup of water is a mixture of tea and honey.这杯水是茶和蜂蜜的混合物。This drink is a mixture of three different s
18、orts.这种饮料是由三个品种混合而成。【归纳拓展】1.课前自主学习课堂互动探究话题美文欣赏【完成句子】我们有时能把工作和娱乐结合起来。We can sometimes_business_pleasure.她把面粉和牛奶混合起来。She_flour and milk _.我必须承认，我对新英语老师说不上喜欢还是不喜欢。I must admit that I have_feelings about my new English teacher.mix withmixed togethermixed课前自主学习课堂互动探究话题美文欣赏electrical adj.电的；与电有关的The cooke
19、r isnt working because of an electrical fault.这个炊具不能用了，因为出了电气方面的故障。【归纳拓展】2课前自主学习课堂互动探究话题美文欣赏用electric 或electrical 填空The heavy truck is driven by an_motor.The cooker doesnt work because of an_fault.electricelectrical课前自主学习课堂互动探究话题美文欣赏equipment U n.设备；装备Now a lot of electrical equipment is needed for
20、large stages.现在大型舞台上需要很多电气设备。Our school has been given some new equipment.(有人)给我们学校一些新设备。3课前自主学习课堂互动探究话题美文欣赏【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【单项填空】Your education will_you to earn a good living.Work hard from now on.A.associateB.equipC.relateD.feed解析:句意：你所受的教育会使你过上富裕的生活。从今以后努力学习吧。equip使有能力，符合题意。associate使联合（系
21、）；relate适应，使相互关联;feed喂养。答案:B课前自主学习课堂互动探究话题美文欣赏4react vi.反应Acid can react with alkali to form salt.酸和碱起化学反应生成盐。How do acids react with metals?酸对金属起什么反应？【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【完成句子】铁和水和空气反应而生成锈。Iron reacts_water and air to produce rust.威尔逊对你的想法有什么反应？How did Wilson react_your idea?withto课前自主学习课堂互动探究话
22、题美文欣赏aim n.目标；目的What is your aim in life？你生活的目标是什么啊？The main aim of the course is to improve students communication skills.这门课程的主要目的是提高学生的沟通技巧。【归纳拓展】5课前自主学习课堂互动探究话题美文欣赏【完成句子】丹佛用枪瞄准了目标，但是没有开枪。Denver_his gun but did not shoot.我的目标是暑假前减掉4公斤体重。Im_ _ lose 4kg before the summer holidays.他做什么事都漫无目的。He does
23、 everything_ _.aimedaiming towithout aim课前自主学习课堂互动探究话题美文欣赏conclusion n结论；结束；结尾It is still too early to reach a conclusion now.现在下结论还太早。Its very difficult to reach the conclusion because we knew little about that plan.我们很难得出结论，因为我们不了解那个计划。Ive come to the conclusion that hes not the right person for t
24、he job.我断定他不适合做这份工作。6课前自主学习课堂互动探究话题美文欣赏【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【完成句子】最后，祝大家健康长寿。_，I wish you all have good health and a long life.温总理用一句著名的中国谚语结束了他的讲话。Premier Wen_hisspeech_afamous Chinese saying.To conclude/In conclusionconcluded with课前自主学习课堂互动探究话题美文欣赏1.put.in order按顺序排放；整理His secretary helped him
25、to put his papers in order.他的秘书帮他把文件整理好。Put the following sentences in order.按顺序排列下列句子。课前自主学习课堂互动探究话题美文欣赏【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【完成句子】房间里的东西摆放得乱七八糟的，但是她很快就把它们收拾整齐了。All the things in the room were_ _ _，but she soon_them_ _.一切都正常。Everything is_ _.out oforder in orderput in order课前自主学习课堂互动探究话题美文欣赏2.ad
26、d.to.往加入If you add 5 to 5,you can get 10.五加五等于十。She added some sugar to the tea.她往茶里加了些糖。【归纳拓展】add to 增加；添加add.up 把加起来add up to 合计课前自主学习课堂互动探究话题美文欣赏【完成句子】饮用咖啡之前加些糖。_some sugar_thecoffee before you drink it.音乐增添了我们的快乐。The music_ _our enjoyment.Add toadded to 课前自主学习课堂互动探究话题美文欣赏3think of想起，想到；考虑；认为When
27、 I see the photos，I think of my college days.当我看到这些照片时，我就想起我的大学时代。I cant think of the word for newspaper in French.我想不起法语中的“报纸”怎么说了。I was thinking of something completely different.我正在考虑完全不同的另外一件事。What do you think of my new computer?你认为我的新电脑如何？课前自主学习课堂互动探究话题美文欣赏【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【比较网站】think o
28、f/think about/think over易混词汇辨 析think of除了“想，考虑”外，还有“想起；打算；评价”之意think aboutn./pron.有“想，考虑；回想，想起”之意think over意为“仔细考虑”，其中over 为副词，宾语若为代词，放其前面课前自主学习课堂互动探究话题美文欣赏用恰当的介词或副词填空I know his face，but I cant think_where Ive met him.She is thinking_her childhood days.Jacks very good at thinking_excusesfor not work
29、ing.When youve thought things_，youll probably realize that my idea is quite good.ofaboutupover课前自主学习课堂互动探究话题美文欣赏4 at least(也 可 写 作 at the least，其 反 义 词 组 为：at(the)most)(1)至少It will take you at least 20 minutes to get there.到那里至少要花20分钟。(2)至少(指尽管没有更好的情况)I dont expect you to pay me，but you could at lea
30、st cover my expenses，我不指望你给我报酬，但你至少也得支付我的费用呀。课前自主学习课堂互动探究话题美文欣赏【归纳拓展】课前自主学习课堂互动探究话题美文欣赏【单项填空】Has every student passed the final exam?No.Unfortunately,_three from each class has failed.A.no least thanB.no more thanC.at leastD.by least解析:答句意为：不，不幸的是，每班至少有3个同学考试不及格。答案:C课前自主学习课堂互动探究话题美文欣赏1Here is a tabl
31、e with the metals that react most at the top，and the metals that react least at the bottom.这里有一个表格，反应强烈的金属在上面，反应微弱的在下面。本句中here is a table 是完全倒装句式，主语是a table。以地点副词 here，there 等或时间副词 now，then等开头，后面的动词是be，come，exist，fall，follow，go，lie，stand等，主语又是名词时，句子要完全倒装。Here comes the bus！公共汽车来了！There entered a str
32、ange little fellow.走进来一个奇怪而身材又矮又小的人。课前自主学习课堂互动探究话题美文欣赏注意：(1)在here，there引出的倒装句中，当主语是普通名词时句子要完全倒装，但当主语是人称代词时，句子要主谓不倒装。Here comes the postman!邮递员终于来了！Here we are.我们到了。(2)表示方位的副词或介词短语置于句首时，句子要用全部倒装。At the front of the hall sat the headmaster.校长坐在大厅的前部。Down comes the rain.下雨了。课前自主学习课堂互动探究话题美文欣赏【单项填空】At t
33、he good news_.A.up he jumped from his chairB.up jumped he from his chairC.from his chair did he jump upD.up from his chair did he jump解析:句意：听到这个好消息，他从椅子上跳了起来。表示方位的副词up前置，句子谓语动词为jumped，但句子主语为人称代词（he），所以句子主谓不倒装，故本题选A。答案:A课前自主学习课堂互动探究话题美文欣赏2Twothirds of the earths surface is water.地球的三分之二表面是水。twothirds
34、 是分数表达形式，在句中与of the earths surface一起作主语。这种情况下，谓语动词的数要和of后名词的数保持一致。Threefifths of the students in our class are from Wuhan.我们班里五分之三的学生来自武汉。Twothirds of the water in the glass is gone.杯子里三分之二的水没了。课前自主学习课堂互动探究话题美文欣赏【完成句子】这个地区三分之二的土地被绿树和小草所覆盖。_of the land in the district_coveredwith trees and grass.这个村庄
35、里五分之三的房子是去年重建的。_of the houses in the village_rebuiltlast year.TwothirdsisThreefifthswere课前自主学习课堂互动探究话题美文欣赏3.It is hard to think of a world without metals.很难想象一个没有金属的世界。It is adj.(for sb)to do sth 本句中 it是形式主语，真正的主语是动词不定式。Apparently its cheaper to fly than go by train.显然，坐飞机比坐火车便宜。It is important for
36、us to grasp a living skill.对我们来说，掌握一门生活技能是很重要的。课前自主学习课堂互动探究话题美文欣赏【归纳拓展】It is a pity you couldnt come.你来不了，真遗憾。I think it impossible for us to finish the work in such a short time.我认为在这么短的时间内完成这个工作是不可能的。课前自主学习课堂互动探究话题美文欣赏【完成句子】他不断改变主意让我担忧。_worries me the way he keeps changing his mind.他还没有弄清这场会议的时间和地点。He didnt_when and where the meeting would be held.Itmake it clear
