1、 Module 5 A Lesson in a LabReading and vocabularyRead the passage as quickly as you can and choose the best title for it.The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen Passage AWe can reach a conclusion that it isimportant for us to read books.It is our aim to
2、 build up a harmonious society.It is a piece of electrical equipment.The stone contains potassiumsodiumcalcium magnesium The wheel is made of aluminum.zinc oxideNails are easy to rust in the damp air.Water boils at 100 C.conclusionaimelectricalpotassiumsodiumcalciummagnesium aluminumzinc copperoxide
3、rustboilsRead the passage again and answer the following questions:1.Which of the metals in the table reacts the most with oxygen and water?Potassium,calcium and sodium.2.What happens when you heat calcium in oxygen?It burns to form an oxide.3.Which metals react with steam?Magnesium,aluminium and zi
4、nc.4.Does iron have a slow or fast reaction with steam?It has a slow reaction.5.Does copper react with water?No,it doesnt.Read the passage and fill in the chart.Iron in dry airIron in air-free waterIron in ordinary waterStage A(starting experiment)cotton woolwater water Passage BStage B(1 week later
5、)Stage C(Result)nailswater Iron does not rustIron does not rust Iron rustsRead the passage again and complete the sentences.1.In the first part of the experiment,the _ is dry,not wet.2.It shows that iron _ when the air is dry.airdoes not rust3.In the second part of the experiment,you must _ the wate
6、r to make sure there is no _ in it.4.You add _ to the water because this keeps _ out of it.5.It shows that _ does not rust in water that has no _ in it.boilairsome oilairnailairHomework 1.Learn the new words and important sentences by heart.2.Read Passage A and B and try to retell it.基础落实.高频单词思忆1.We
7、 climbed out of the hole,right in front of two(惊讶的)policemen.2.This is a 5star hotel with perfect(设备).3.The new taxes came as a shock to (普通的)Americans.4.The population of the town(膨胀)rapidly in the 1960s.astonishedfacilitiesordinaryexpanded5.From these facts we can draw some (结论)about how the pyram
8、ids were built.6.I think the sudden break of the electricity has something to do with an (电的)fault.7.They carry logs by(漂)them down the river.conclusionselectricalfloating8.The professor is giving a series of (讲座)on molecular biology.9.This drink is a(混合物)of three different sorts,so it has several t
9、astes.10.Try to keep a(平衡)between work and relaxation.lecturesmixturebalance.重点短语再现1.add.给增加add 使增加 add to总计；总共2.the bottom 在的底部the bottom of ones heart从心底里；由衷地3.be of对感到自豪；骄傲take in以为自豪4.be supposed 理应；被认为是I suppose 我看可以5.in order按顺序摆放 order整齐；条理out order次序颠倒totoupatoffromproudpridetosoputinof6.thi
10、nk 考虑；想到think 想出(主意等)think 仔细考虑think 再三考虑；慎重思考e up 突然想起come to 苏醒；活跃起来8.from that moment 从那一刻起from on从那时起from on从现在起9.turn轮流 by 轮流地；依次地 take to do.轮流做turn结果是10.react 与发生反应react(人)对作出反应ofupovertwicewithlifeonthennowinturnsturnsoutwithto.典型句式运用1.Two-thirds of the earths surface is water.地球表面的三分之二是水。考查
11、分数的表达法和主谓一致这里三分之一的书是属于他的。考点提炼句子仿造One third of the books here belong to him.2.The earth is forty-nine times larger than the moon.地球比月球大四十九倍。考查倍数表达法新修的路比原来的路宽3倍。考点提炼句子仿造The newly-built road is three timeswider than that old one.3.Its hard to think of a world without metals.很难想像一个没有金属的世界。考查句式It is+adj.
12、+(for/of sb.)+to do sth.把伞忘在出租车上，你真粗心。考点提炼句子仿造Its careless of you to leave yourumbrella in the taxi.4.The closer you are,the more youll see.你靠的越近，看到的就越多。考查The more.,the more.句式你越是努力，取得的进步就越大。考点提炼句子仿造youll make.The harder you study,the more progress5.Below is a description of a simple scientific expe
13、riment.下面是对一个简单的科学实验的描述。考查倒装句式我们靠天吃饭的日子一去不复返了。考点提炼句子仿造Gone are the days when we had to be at the mercy of the weather.导练互动重点单词1.contract v.(使)收缩；和订合同;n.契约，合同When you heat a metal,it contracts.当你给金属加热时,它会收缩。（回归课本P41）观察思考If you ice the metal,it will contract.如果你冷冻金属，它就会收缩。We contracted with a shoe fac
14、tory for 4,000 pairs of shoes.我们和一家鞋厂签订了一份4 000双鞋的合同。He made a two-year contract of employment with the firm.他和那家公司签订了两年的雇用合同。归纳拓展make a contract with 与签合同sign a contract签署合同carry out a contract 履行合同cancel a contract取消合同break a contract违反合同by/on contract按照合同；依约活学活用You should read the carefully befor
15、e you sign it.A.contrastB.contactC.contractD.conflict解析考查名词词形和词义的辨析。contract合同；contrast对照，对比；contact联系，接触；conflict冲突。C2.conclusion n.结论；断定；结束；结局；协定，协议观察思考What conclusion do you draw from the evidence?你从证据中得到了什么结论？From what you say I conclude that you are right.根据你的话我断定你是对的。The play concluded with th
16、e death of the entire cast.该剧以全体剧中人物之死为结局。In conclusion,I wish all of you good health and a long life.最后，我祝大家健康长寿。归纳拓展conclusion作“结束，结尾”讲时常用单数，用作“结论”讲时为可数名词，用作“协议，缔结”讲时为不可数名词。come to/arrive at/reach/draw a conclusion得出结论bring.to a conclusion使结束in conclusion最后conclude v.结束；断定;订立conclude with以而结束concl
17、ude sth.from sth.从某事中得出某个结论conclude sth.(with)sb.与某人达成(协定)活学活用David from the analysis of the traffic accident that it had been caused by human error.A.announcedB.acknowledgedC.concludedD.considered解析句意为：David从交通事故分析中推断出这次交通事故是人为错误导致的。C3.react vi.回应；起作用；起反应Which of the metals in the table reacts the
18、most with oxygen and water?表格中的金属哪一个与氧气和水反应最厉害？(回归课本P44)观察思考How did Wilson react to your idea?威尔逊对你的想法反应如何？Iron reacts with water and air to produce rust.铁和水及空气发生反应生成锈。Most people reacted against the passing of the law.多数人反对通过这项法律。Applause can react greatly on/upon a speaker.听众的掌声对演讲人有很大影响。归纳拓展react
19、的含义及用法：(1)作出反应，回应(与to连用);(2)反对，反抗，反动(与against连用);(3)(指物质)起化学反应(与with连用);(4)对某事物有影响，对某事物产生变化(与介词on连用)。活学活用The football player reacted the judges decision by withdrawing from the match.A.onB.toC.againstD.by解析表示“人对作出反应”用to。B4.ordinary adj.普通的；平常的；n.常事；惯例The nails rust in the tube with ordinary water.在有
20、普通水的试管里的铁钉生锈。(回归课本P45)观察思考Today he came earlier than usual,for it was not an ordinary day.他今天来得比平常早，因为今天是一个不平常的日子。He is out of the ordinary among the children.他是一个不寻常的孩子。易混辨异ordinary/common/usual/normal(1)ordinary普通的，平常的，平凡的。强调在等级和类属方面普通。指人时，该词指既不显赫也不低贱；指物时指品质或质地水平一般。有“平庸无奇”之意。(2)common普通的；常见的。强调经常发生，司空见惯，不显赫或不特别，可修饰人或物。也可指共同的，共存的。The plants are common here.这些植物在这里很普遍。(3)usual通常的；惯常的，惯例的。强调依照惯例来判断，有“遵循常规”之意。It is usual for him to go back home late.他回家晚是常事。(4)normal正常的，合乎标准的。强调在正常情况下应有的。His temperature was two degrees above normal.他的体温比正常体温高两度。
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