2014年秋高中英語Module5ALessoninaLab（第二課時(shí)）課件外研版必修.ppt

1、Module 5 A Lesson in a Lab,Reading and vocabulary,Read 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 A,We can reach a conclusion that it is important for us to read books,It is our aim

2、 to build up a harmonious society,It is a piece of electrical equipment,The stone contains potassium,sodium,calcium,magnesium,The wheel is made of aluminum,zinc,oxide,Nails are easy to rust in the damp air,Water boils at 100 C,conclusion,aim,electrical,potassium,sodium,calcium,magnesium,aluminum,zin

3、c,copper,oxide,rust,boils,Read 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? M

4、agnesium, aluminium and zinc. 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,cotton wool,water,water,Passage B,nails,water,Iron does not rust,Iron does not rust,Iron rusts,Read the pa

5、ssage 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,air,does not rust,3. In the second part of the experiment, you must _ the water to make sure there is no _ in it. 4. You add _ to the water because this k

6、eeps _ out of it. 5. It shows that _ does not rust in water that has no _ in it,boil,air,some oil,air,nail,air,Homework,Learn the new words and important sentences by heart. 2. Read Passage A and B and try to retell it,基礎(chǔ)落實(shí) .高頻單詞思憶 1.We climbed out of the hole,right in front of two (驚訝的) policemen.

7、2.This is a 5star hotel with perfect (設(shè)備). 3.The new taxes came as a shock to (普通的) Americans. 4.The population of the town (膨脹) rapidly in the 1960s,astonished,facilities,ordinary,expanded,5.From these facts we can draw some (結(jié)論) about how the pyramids were built. 6.I think the sudden break of the

8、electricity has something to do with an (電的) fault. 7.They carry logs by (漂) them down the river,conclusions,electrical,floating,8.The professor is giving a series of (講座) on molecular biology. 9.This drink is a (混合物) of three different sorts,so it has several tastes. 10.Try to keep a (平衡) between w

9、ork and relaxation,lectures,mixture,balance,重點(diǎn)短語再現(xiàn) 1.add. .給增加add 使增加 add to總計(jì)；總共 2. the bottom 在的底部 the bottom of ones heart從心底里；由衷地 3.be of對(duì)感到自豪；驕傲take in以為自豪 4.be supposed 理應(yīng)；被認(rèn)為是I suppose 我看可以 5. .in order按順序擺放 order整 齊；條理out order次序顛倒,to,to,up,at,of,from,proud,pride,to,so,put,in,of,6.think 考慮；想

10、到think 想出(主意 等)think 仔細(xì)考慮think 再 三考慮；慎重思考 e up 突然想起come to 蘇醒； 活躍起來 8.from that moment 從那一刻起from on從那時(shí)起from on從現(xiàn)在起 9. turn輪流 by 輪流地；依次地 take to do.輪流做turn 結(jié)果是 10.react 與發(fā)生反應(yīng)react (人) 對(duì)作出反應(yīng),of,up,over,twice,with,life,on,then,now,in,turns,turns,out,with,to,典型句式運(yùn)用 1.Two-thirds of the earths surface is

11、water. 地球表面的三分之二是水。 考查分?jǐn)?shù)的表達(dá)法和主謂一致 這里三分之一的書是屬于他的,考點(diǎn)提煉,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。 考查倍數(shù)表達(dá)法 新修的路比原來的路寬3倍,考點(diǎn)提煉,句子仿造,The newly-built road is three times,wider than that old one,3. Its hard to think of a world without met

12、als. 很難想像一個(gè)沒有金屬的世界。 考查句式It is+adj.+(for/of sb.)+ to do sth. 把傘忘在出租車上，你真粗心,考點(diǎn)提煉,句子仿造,Its careless of you to leave your,umbrella 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，取得的進(jìn)步就越大,考點(diǎn)提煉,句子仿造,youll make,The harder you study,the more progress,5.Below

13、 is a description of a simple scientific experiment. 下面是對(duì)一個(gè)簡(jiǎn)單的科學(xué)實(shí)驗(yàn)的描述。 考查倒裝句式 我們靠天吃飯的日子一去不復(fù)返了,考點(diǎn)提煉,句子仿造,Gone are the days when we had to be at,the mercy of the weather,導(dǎo)練互動(dòng) 重點(diǎn)單詞 1.contract v.(使)收縮；和訂合同;n.契 約，合同 When you heat a metal,it contracts. 當(dāng)你給金屬加熱時(shí),它會(huì)收縮。（回歸課本P41,觀察思考 If you ice the metal,it w

14、ill contract. 如果你冷凍金屬，它就會(huì)收縮。 We contracted with a shoe factory for 4,000 pairs of shoes. 我們和一家鞋廠簽訂了一份4 000雙鞋的合同。 He made a two-year contract of employment with the firm. 他和那家公司簽訂了兩年的雇用合同,歸納拓展 make a contract with 與簽合同 sign a contract簽署合同 carry out a contract 履行合同 cancel a contract取消合同 break a contra

15、ct違反合同 by/on contract按照合同；依約,活學(xué)活用 You should read the carefully before you sign it. A.contrastB.contact C.contractD.conflict 解析 考查名詞詞形和詞義的辨析。contract合同；contrast對(duì)照，對(duì)比；contact聯(lián)系，接觸； conflict沖突,C,2.conclusion n.結(jié)論；斷定；結(jié)束；結(jié)局； 協(xié)定，協(xié)議 觀察思考 What conclusion do you draw from the evidence? 你從證據(jù)中得到了什么結(jié)論？ From wh

16、at you say I conclude that you are right. 根據(jù)你的話我斷定你是對(duì)的,The play concluded with the death of the entire cast. 該劇以全體劇中人物之死為結(jié)局。 In conclusion,I wish all of you good health and a long life. 最后，我祝大家健康長(zhǎng)壽,歸納拓展 conclusion作“結(jié)束，結(jié)尾”講時(shí)常用單數(shù)，用 作“結(jié)論”講時(shí)為可數(shù)名詞，用作“協(xié)議，締結(jié)” 講時(shí)為不可數(shù)名詞。 come to/arrive at/reach/draw a conclu

17、sion得 出結(jié)論 bring.to a conclusion使結(jié)束 in conclusion最后 conclude v.結(jié)束；斷定;訂立 conclude with以而結(jié)束 conclude sth.from sth.從某事中得出某個(gè)結(jié)論 conclude sth.(with) sb.與某人達(dá)成(協(xié)定,活學(xué)活用 David from the analysis of the traffic accident that it had been caused by human error. A.announced B.acknowledged C.concluded D.considered 解

18、析 句意為：David從交通事故分析中推斷出這次交通事故是人為錯(cuò)誤導(dǎo)致的,C,3.react vi.回應(yīng)；起作用；起反應(yīng) Which of the metals in the table reacts the most with oxygen and water? 表格中的金屬哪一個(gè)與氧氣和水反應(yīng)最厲害？ (回歸課本P44,觀察思考 How did Wilson react to your idea? 威爾遜對(duì)你的想法反應(yīng)如何？ Iron reacts with water and air to produce rust. 鐵和水及空氣發(fā)生反應(yīng)生成銹。 Most people reacted

19、against the passing of the law. 多數(shù)人反對(duì)通過這項(xiàng)法律。 Applause can react greatly on/upon a speaker. 聽眾的掌聲對(duì)演講人有很大影響,歸納拓展 react的含義及用法： (1)作出反應(yīng)，回應(yīng)(與to連用); (2)反對(duì)，反抗，反動(dòng)(與against連用); (3)(指物質(zhì))起化學(xué)反應(yīng)(與with連用); (4)對(duì)某事物有影響，對(duì)某事物產(chǎn)生變化(與介詞on連用,活學(xué)活用 The football player reacted the judges decision by withdrawing from the match. A.onB.to C.againstD.by 解析 表示“人對(duì)作出反應(yīng)”用to,B,4.ordinary ad