高中英语 5.1练习课件 外研必修1 (陕西专).ppt
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1、Section Introduction&Reading and Vocabulary2021/8/11 星期三1Step One:Warming up2021/8/11 星期三2Do you like doing scientific experiments?What should you pay attention to when you are carrying out an experiment in a lab?_答案:答案:Carrying out an experiment in a lab is very dangerous.You must be careful and do
2、 the experiment under your teachers guidance.2021/8/11 星期三3Step Two:Fast readingRead the two passages(P4445)quickly and answer the following questions.1What should we know when we use metals?_答案:答案:We should know how metals react with different substances.2021/8/11 星期三42What will happen to copper wh
3、en it is kept in water?_答案:答案:No reaction/Nothing.2021/8/11 星期三53Why is oil added to the water?_答案:答案:To keep air out of the water.2021/8/11 星期三64What is the use of the cotton wool in the test tube?_答案:答案:Keeping air dry.2021/8/11 星期三7Step Three:Careful readingRead the text(P4445)carefully and choos
4、e the best answers.1Which of the following metals reacts most with water?ACopper.BIron.CAluminium.DSodium.答案:答案:D2021/8/11 星期三82According to Passage A,which of the following reacts most easily when it is heated in oxygen?AAluminium.BIron.CSteel.DCopper.答案:答案:A2021/8/11 星期三93We can know from the expe
5、riment_.Ahow iron rusts with oilBiron is quite easy to rustChow we can prevent iron from rustingDhow iron reacts with all the other substances答案:答案:C2021/8/11 星期三104If some clean iron nails are kept in a wet place for a week,the nails will_.Arust Bnot rustCform an oxide Dkeep the place dry答案:答案:A202
6、1/8/11 星期三115This passage mainly talks about _.Aall kinds of metalsBwhat kind of metal reacts mostCthe different reactions of metalsDhow metals react答案:答案:C2021/8/11 星期三12Step Four:SummaryDifferent metals have different uses.When we use metals,it is important to know how they react with different 1.
7、_.The 2._of metals with these substances can be put in order.From the table,we can find potassium reacts the most with oxygen and water while copper 3._react with water.When we heat calcium in oxygen,it burns to 4._an oxide.2021/8/11 星期三13To find out if iron rusts in dry air,in airfree water and in
8、5._water.Lets do a simple scientific experiment.We need different pieces of 6._,which are clean iron nails,test tubes,a test tube holder,some cotton wool,oil and a Bunsen burner.2021/8/11 星期三14Well,first,put some iron nails at the 7._of a test tube.Then push some cotton wool down the tube.Next,leave
9、 the tube for one week.After one week,the nails have not 8._.It shows that iron doesnt rust when the air is dry.2021/8/11 星期三15In the second part of the experiment,you must boil the water to make sure there is no air in it.You add some oil to the water because this 9._air out of it.It also shows tha
10、t iron does not rust in water without air in it.10._,the nails rust in the tube with ordinary water in the third part of the experiment.That is how iron reacts with air and with water.2021/8/11 星期三16答案:答案:1.substances2.reaction3.doesnt4.form5ordinary6.equipment7.bottom8.rusted9.keeps10However2021/8/
11、11 星期三17expand v膨胀;扩大,扩张膨胀;扩大,扩张(课文原句课文原句P41)When you heat a metal,it expands.当你加热一种金属的时候,它会膨胀。当你加热一种金属的时候,它会膨胀。Student numbers are expanding rapidly.学生人数在迅速增加。学生人数在迅速增加。2021/8/11 星期三18Air expands when heated.空气受热膨胀。空气受热膨胀。The writer expanded his short novel into a long one.那位作者把他的短篇小说扩展为长篇。那位作者把他的短
12、篇小说扩展为长篇。His company expanded into a big one.他的公司扩大规模而成为大公司。他的公司扩大规模而成为大公司。2021/8/11 星期三191.McDonalds has_its business by opening more stores in big cities.AexpandedBspreadCincreased Dimproved解析:解析:expand ones business扩大生意。扩大生意。答案:答案:A2021/8/11 星期三20stage nC 阶段,时期;舞台阶段,时期;舞台(课文原句课文原句P44)Put these wo
13、rds in the correct order to describe the stages of a scientific experiment.把下列词按正确的顺序排列来描述一个科学实验把下列词按正确的顺序排列来描述一个科学实验的阶段。的阶段。The peace talk has reached an important stage.和平会谈已达到重要阶段。和平会谈已达到重要阶段。2021/8/11 星期三21The project has reached a stage where we must make a choice.这项工程已达到我们必须做出选择的阶段。这项工程已达到我们必须
14、做出选择的阶段。Tom stood on the stage,feeling very nervous.汤姆站到舞台上,感到非常紧张。汤姆站到舞台上,感到非常紧张。2021/8/11 星期三222.Theyre getting to the stage_they hardly ever go out together to have dinner.Awhat BthatCwhere Dwhich解析:解析:此题考查定语从句,此题考查定语从句,where在从句中在从句中作地点状语。作地点状语。答案:答案:C2021/8/11 星期三233完成句子完成句子It is no use talking
15、about the result_ _ _(在这个阶段在这个阶段)答案:答案:at this stage2021/8/11 星期三24react vi.反应反应react with.与与发生发生(化学化学)反应反应react against sth./sb.反对,反抗反对,反抗(课文原句课文原句P44)When we use metals,it is important to know how they react with different substances,for example,water and oxygen.当当我们使用金属时,懂得它们与其他物质比如水和我们使用金属时,懂得它们
16、与其他物质比如水和氧气怎样发生反应,这是很重要的。氧气怎样发生反应,这是很重要的。2021/8/11 星期三252021/8/11 星期三26I wasnt sure how you would react to the decision.我不确定你会对这个决定有什么反应。我不确定你会对这个决定有什么反应。Iron reacts with water and air to produce rust.铁铁与水和空气起反应而生锈。与水和空气起反应而生锈。Many young people react against traditional values.许多年轻人反对传统的价值观。许多年轻人反对传
17、统的价值观。2021/8/11 星期三27reaction n反应反应(课文原句课文原句P44)The reaction of metals with these substances can be put in order.(不同的不同的)金属与这些金属与这些物质的反应程度可以按顺序排列起来。物质的反应程度可以按顺序排列起来。2021/8/11 星期三284.完成句子完成句子遇到危险时,我们的第一反应就是跑开。遇到危险时,我们的第一反应就是跑开。Running away is_ _ _when we meet danger.孩子们通常以违背父母的意愿来反抗他们。孩子们通常以违背父母的意愿来反
18、抗他们。Children tend to_ _their parents by going against their wishes.答案:答案:our first reactionreact against2021/8/11 星期三29form(1)v.(使使)形成;使形成;使(组成组成);养成;养成(课文原句课文原句P44)Burns to form an oxide燃烧生燃烧生成氧化物成氧化物We should form a good habit to keep healthy.我们应该养成好习惯以保持健康。我们应该养成好习惯以保持健康。2021/8/11 星期三30(2)n.形式,形状
19、;表格,格式形式,形状;表格,格式in the form of以以形式,呈形式,呈状态状态fill in/out a form填表格填表格Help in the form of money will be very welcome.以钱的形式资助将十分受欢迎。以钱的形式资助将十分受欢迎。Please fill in the following form.请填写下面的请填写下面的表格。表格。2021/8/11 星期三315.Youd sound a lot more polite if you make a quest_a question.Ain search ofBin the form o
20、fCin need of Dinstead of解析:解析:句意为:如果你以问题的形式提出句意为:如果你以问题的形式提出要求,那会显得更有礼貌。要求,那会显得更有礼貌。in the form of以以形式。形式。答案:答案:B2021/8/11 星期三326完成句子完成句子My son has_ _ _ _ _ _ _(养成早养成早起的习惯起的习惯)in the morning.答案:答案:formed the habit of getting up early2021/8/11 星期三33conclusion n结论结论arrive at/come to/draw/reach a concl
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