单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,2024/11/17,To know some metals and their reactions with some substances,To learn how to do an experiment,To be able to retell the main points in the text,To build up the love for science,Goals,2024/11/17,potassium,sodium,calcium,magnesium,aluminium,zinc,iron,copper,2024/11/17,1.The Different Uses of Metals,2.The Reaction of Metals,3.The Reaction of Metals with Oxygen,Choose the best title for Passage A.,Scanning,2024/11/17,Read Passage A again and answer the questions,Which metals,react the most with,oxygen and water?,What happens when you,heat,calcium in oxygen?,Which metals react with steam?,4.Does iron,have a slow or fast reaction with,steam?,5.Does copper react with water?,Potassium,sodium and,calsium.,It burns to form an oxide.,Magnesium,aluminium,and zinc.,Slow.,No,it doesnt.,Do you think it is,scientific,to make,Goujian Sword by,using copper,After learning Passage A,?,What can we learn from Passage A?,It is very important to know_,_.It is very useful in our daily life.,Harvest,metals can react with different substances,how,?,aim,result,conclusion,method,apparatus,How many stages are there in,a scientific experiment report,Fast reading,Passage B,2024/11/17,Iron in dry air,Iron in air-free water,Iron in,ordinary water,Use of cotton wool,_,Use of oil,_,Why it rusts,_,cotton wool,nails,_,_,_,_,_,ordinary,water,rusty nails,oil,water,Keep the nails dry,Keep air out of the,water,Air in the water,nails,2024/11/17,Conclusion,Iron rusts in_,.,Iron doesnt rust in,_,and,_,ordinary water,dry air,air-free water,.,2024/11/17,half-fill with.,boil,put in,add to,leave,result,Observe the following experiment carefully and then write down,an experiment report,Aim,Apparatus,Method,Result,Conclusion,to find out if potassium reacts with cold,water.,a container,cold water,potassium,filter paper,（滤纸,),a pair of tweezers(,镊子）,(,1)Half-fill the container with cold water.,(2)Take a piece of potassium out of the oil.,(3)Dry the potasium with the paper.,(4)Put the potassium into the water.,The potassium burns.,Potassium reacts with cold water.,An Experimennt Report,2024/11/17,Sum up,How can you do a scientific experiment successfully?,First,we need to have an_ and prepare _ for the experiment before we do the experiment.,Second,we must use correct_to do,the experiment and watch carefully.,Then,we can get the_and draw a_.,aim,apparatus,methods,result,conclusion,.,短语运用,be proud of,used to,aimed at,add up to,keep out of,put.in order,keep ones balance,think of,react with,be supposed to,1.In nature,many kinds of materials can,each other under certain,conditions.,2.You,ask the teacher if,you want to leave the classroom.,3.He lifted his gun and,the bird,in the tree.,react with,are supposed to,aimed at,4.All the money I had,no more,than one hundered dollars.,5.When I saw these photos,I,my,college days.,6.Try to,the trouble between,them.,7.Books should,again after,you have finished reading them.,added up to,thought of,keep out of,be put in order,8.I struggled to,on my new,skates.,9.All the Chinese,the success,of Shenzhou.,10.Life now is much better than it,be.,keep my balance,are proud of,used to,.,翻译句子,1.,学生人数在迅速增加。（,expand,）,2.,做完实验后，一切东西都要有序的排列在器皿,柜中。,(put.in order),3.,这是我过去经常去游泳的小河。,(where),Student numbers are expanding rapidly.,After the experiment,everything is put in,order in the cupboard.,This is the river where I used to go,swimming.,4.To find out the truth,youd better do it,once by yourself.,（不定式作目的状语）,5.It is hard to think of a world without,metals.,为了发现事实，你最好亲自做一次。,很难想像一个没有金属的世界。,.,单项填空,1.On hearing the news,the girl rushed out,without hesitation,the bag,on,the floor and,in the dark.,A.left;lied;disappeared,B.leaving;lying;disappeared,C.leaving;lie;disappearing,D.left;lay;disappear,解析,分析句子知,leaving the bag.,是分词,短语作状语；而,the bag,和,lie,间是主谓关系，,故用,lying,的形式；而,disappear,和,rush out,是,句子的谓语动词；因此,B,正确。,B,2.There are both advantages and,disadvantages in the scheme proposed,but,I think we should benefit by,adopting it.,A.on balanceB.out of balance,C.on the balanceD.off balance,解析,on balance,总的来说。,A,3.Churches are often built,the cross,in the West.,A.in form ofB.in the form of,C.with form ofD.in a form of,解析,in the form of.,以,样的形式；呈,现,样的形式。,B,4.When,metals,.,A.heating;extendB.heated;extend,C.heating;expendD.heated;expand,解析,metal,和,heat,为动宾关系，故用,heated,完整形式是：,When it is heated,由常识知加,热时铁膨胀，故用一般现在时。,D,5.They will start their project,at,helping the poor children to be educated,in Chinas west.,A.aimsB.aiming,C.being aimedD.aimed,解析,分析句子知,project,和,aim at,之间是主谓,关系，故用其,-ing,形式,aiming,。,B,6.After a long discussion about the,advantages and disadvantages of the plan,they finally came to a(n),that it,was practical.,A.decisionB.opinion,C.conclusionD.impression,解析,come to a conclusion,得出结论。空后,的,that it was practical,是,conclusion,的同位,语。,C,of the people on the Net,Chinas economy is among the strongest in the world.,A.Four fifth;believes,B.Four fifth;believe,C.Four fifths;believe,D.Four fifths;believes,解析,考查分