201x年秋高中英语 Module 5 A Lesson in a Lab（第一课时） 外研版必修

1、 Module 5 A lesson in a Lab 外研社外研社高中英语高中英语第一册第一册new words To learn about some vocabulary and knowledge related to science and experiments To know how to do a simple experiment and write the report about it in English 3. To raise interests in science and form the right scientific attitude. Teaching A

2、imslabtest tubebalanceBunsen burnercrucible本生灯（煤气喷灯）本生灯（煤气喷灯） When the iron is heated(加热） it will When the iron is cooled(遇冷） it willexpandcontractHow much do you know about general science?How many states does matter exist as?Use your mind!solidliquidgasoxygen metalRead the words together Step I Pr

3、e-reading Put these words in the correct order to describe the stages of a scientific experiment.conclusion aim result method When we do an experiment ,we should first of all have an _.We should use proper _.We should find out the _and get a_.aimmethodsresultconclusion Scanning: Listen to passage A

4、quickly and choose the best title for it. The Different Uses of Metals The Reaction of Metals The Reaction of Metals with OxygenPassage A Careful Reading ;Read passage A carefully and answer: 1. Which of the metals in the table reacts the most with oxygen and water? 2. What happens when you heat cal

5、cium in oxygen? 3. Which metals react with steam? 4. Does iron have a slow or fast reaction with steam? 5. Does copper react with water? Potassium, calcium and sodium.It burns to form an oxide.Magnesium, aluminium and zinc.It has a slow reaction.No, it doesnt. Passage B :Some important words about t

6、he experiment:apparatus (apparatus (仪器仪器, ,设备设备) ) holder (holder (台、架等台、架等) )支持物支持物, , 固定器固定器cotton wool cotton wool 棉絮棉絮bunsen burnerbunsen burner本生灯本生灯（煤气（煤气喷灯）喷灯）Iron in dry airPut/ push/ leaveIron in air-free water Half-fill/boil/ make sure/ put/ add/keep-out ofIron in ordinary waterHalf-fill a

7、nd add/ leave Stage A(Starting experiment) Stage B(1 week later) Stage C (Result )_ _- nails- nails- nails- nails- nails- nails_cotton woolcotton woolIron doesnt rustOil layerwaterOil layerwaterIron doesnt rustwaterwaterIron rusts Consolidation 1 Answer these questions in groups of four. 1) In the f

8、irst part of the experiment,what is the use of the cotton wool in the test tube? 2.) In the second part ,what is there on the surface of the water in the test tube? 3) What is the use of the oil?4) Why are the nails in the test tube with ordinary water rusty? There is oil on the surface of the water

9、 in this test tube. The oil can keep air out of water.The cotton wool can keep air dry.Iron reacts with oxygen in ordinary water and forms rust. Lets do a simple experiment to test if magnesium can burn in the air and write a short report:Aim:Methods:Result:Conclusion:To find out if Magnesium burns

10、in the air 1)use a pair of tongs to pick up some magnesium2)light it Magnesium is burning with a bright flame in the airMagnesium can burn in the air Magnesium can burn in the air 活学活用Letter boxes are much more in the UK than in the US,where most people have a mailbox instead.解析 本题考查同义词辨析。common指为许多

11、人或事物所共同具备因而常见；ordinary指由于与一般事物的性质或标准相同，因而显得平常，无奇特之处，反义词为special;usual指在某一地方或某一时间内所常见的，往往指常用的东西，或经常发生的事情，反义词为unusual；normal同usual和regular，意为“正常的，正规的，标准的”。句意为：Letter boxes在英国比在美国更常见，在美国大多数人都有一个mailbox。答案 A重点短语与句型5.keep.out of防止进入；不让靠 近 You add some oil to the water because this keeps air out of it. 向水

12、里加一些油因为这可以防止空气进入到水 中。 (回归课本P46) 观察思考 Weve always tried to keep out of local politics. 我们总是尽可能避免卷入地方政治中。归纳拓展keep (sb.) away (from sth.) 使(某人)离开(某物)keep sb.from doing sth.阻止某人做某事keep back阻止，抑制；留(扣)下；忍住(眼泪)；隐瞒keep sth.in mind记住(某事物)keep in touch with与保持联系keep (on) doing sth.继续做某事keep off远离，避开，让开keep up

13、保持，维持keep up with跟上，不落在后面keep to不跑题，不偏离（道路）活学活用A certain percentage of your salary is by the employer as an ensurance payment.A.kept away B.kept outC.kept back D.kept up解析 考查词义辨析。keep back扣留；keep away离开，远离；keep out 避开；keep up维持。C6.used to(过去)常常 I never used to enjoy science,but last year I changed s

14、chools,and the science teachers at my new school are excellent. 我过去从未喜欢过理科，但是去年我转学了， 我新学校的理科教师都非常优秀。 (回归课本P49)观察思考I used to go to work on foot,but now I drive there.我过去常常是步行上班，现在我开车去。You used to see a lot of her,didnt you/usednt you?你过去经常见她，是吧？易混辨异used to/would二者均含有过去做某事的意义。(1)used to暗含和现在的情况对比，强调现在

15、不再那样了。(2)would指过去的习惯，常常做某事，不和现在进行比较。如：He used to be a doctor,but now a lawyer.他过去是一名医生，现在是一名律师。I would sit under a big tree in front of my house as a child.孩提时我经常坐在我家房前的大树下。归纳拓展(1)used to表示过去经常发生的动作或存在的状态，暗含现在不再这样。(2)used to的否定式有两种，即：used not to do和did not use to do。疑问式也有两种，即：Used+主语+to do.?和Did+主语+

16、use to do.?(3)be/get used to doing sth.习惯于做某事be used to do sth.被用来做某事be used as.被用作活学活用用use的适当短语填空I be a middle school teacher,but I resigned in the year 1999.Now my office in that school is used as the school clinic,and I have my new job already.used togot used to7.be supposed to理应；应当 I am going to

17、 try to go to either Montreal or Ottawa University,as both are supposed to have good Physics Departments. 我要尽量去上蒙特利尔大学或渥太华大学，因 为这两所学校都有很好的物理系。 (回归课本P49)观察思考Why are you still at home? You are supposed to have gone to school.你怎么还在家？你早应该去学校了。What makes you suppose him to be connected with them?什么使你想到他和

18、他们之间的联系？Look,suppose/supposing you lost your job tomorrow,what would you do?哎，假设明天丢掉了工作，你会怎么办？归纳拓展(1)suppose作及物动词，意为“认为，想”。后可接从句，可用作插入语，还可接不定式的复合结构。作及物动词时，意为“假定，设想”，有时还可用来提出建议，表示“怎么样”，多用于祈使句，后面的从句多用虚拟语气形式should do,有时should可以省略。(2)be supposed to do表示“应该，应当”。不定式有时可用完成时或进行时。(3)suppose/supposing引起条件状语从句

19、，相当于if的作用，意为“如果，假设”。活学活用(1)Everyone wear a seat belt in the car. A.is supposed toB.supposes to C.is supposedD.supposed to 解析 be supposed to do.理应做。句 意为：所有的人都应系上安全带。A(2) every word of his were true,what action would the teacher take? 解析 suppose起到连词的作用，相当于if，引 导状语从句。句意:如果他说的话都是真的，老 师会采取什么措施？D8.It is h

20、ard to think of a world without metals.很难想像一个没有金属的世界。 句式分析 本句中it为形式主语，真正的主语是不定式短 语to think of.，构成It is/was+adj.+ to do sth.的结构。 Its difficult to finish the task in such a short period of time. 在这么短的时间内完成任务很困难。归纳拓展(1)It is+adj.+for sb. to do sth.(该句式中，作表语的形容词只能说明不定式的行为性质和特点，不能说明不定式的执行者。常见的这类形容词有：easy

21、,important,difficult,hard,possible,impossible,necessary等。)Its important for us to master a foreign language.对我们来说掌握一门外语非常重要。(2)It is+adj.+of sb. to do sth.(该句式中，作表语的形容词表达不定式的逻辑主语的品行、性格或性质。常见的这类形容词有：kind,nice,good,honest,careful,careless,clever,wise,stupid,foolish,rude,polite,impolite等。)Its careless

22、of you to make so many mistakes in this exam.在这次考试中你出了这么多错真是太粗心了。活学活用We all think is not necessary for you to have told her about the bad news.解析 考查句式It is+adj.+for sb. to do sth.的结构。B9.Here is a table with the metals that react most at the top,and the metals that react least at the bottom.这儿有 一个图表，

23、那些反应最强烈的金属在上部， 反应最不强烈的在下部。句式分析这是一个倒装句，正常语序是：A table with.is here.在学习的过程中我们要注意：(1)在there,here引导的句子中，谓语动词是be,exist等表示状态的不及物动词时，句子要全部倒装。(2)在there,here,now,then,thus等开头的句子里，谓语动词是come,go,follow等且主语是名词时，句子要全部倒装。(3)在here,there引导的句子中，当主语是代词时，不倒装，且此类句子不用进行时。Here comes the bus.Lets hurry!车来了,我们快点！Here he come

24、s!他来了！There stands a tall pine tree at the top of the hill.山顶上有一棵高高的松树。活学活用Heres the knife；it was under these dishes.刀子在这儿呢，就在这堆盘子地下。考题回扣【例1】In my opinion,life in the twenty first century is much easier than . （安徽高考） A.that used to be B.it is used to C.it was used to D.it used to be 解析 表示“过去常常”用used

25、 to do., 并且本题中动词原形be不能省略。D课文原文I never used to enjoy science,but last year I changed schools,and the science teachers at my new school are excellent.【例2】Hearing the dog barking fiercely, away . （上海高考） A.fleeing the thief B.was fleeing the thief C.the thief was fleeing D.fled the thief 解析 away置于句首且主语是

26、名词时，句子应 用全部倒装语序。A项不是完整的句子；B项倒 装语序不正确；C项是正常语序，此三项可排除。 课文原文 Below is a description of a simple scientific experiment.D【例3】The message is very important,so it is supposed as soon as possible. （陕西高考） A.to be sentB.to send 解析 be supposed to do sth.表示“理应做 某事”,是习惯搭配,而且send与the message之 间是逻辑上的动宾关系,故须用被动语态形式

27、。 课文原文 I am going to try to go to either Montreal or Ottawa University,as both are supposed to have good Physics Departments.A【例4】It is not immediately clear the financial crisis will soon be over. （上海高考） 解析 这是it作形式主语的名词性从句。句意 为:金融危机是否会很快结束不会立刻明朗的。 若主语从句中去掉soon，也可以选C项，即“金 融危机什么时候会结束”；what在从句中没法 与其他成分搭配；since自从以来，不合句 意。 课文原文 It is hard to think of a world without metals.D【例5】My uncles house in the downtown area is much smaller than ours,but it is twice