高中英语-Module-5-A-Lesson-in-a-Lab-Period-1-Introduct.pptx

Module 5A Lesson in a Lab,Period 1Introduction&Reading and Vocabulary文本研读课,1/27,2/27,.依据汉语提醒及课文语境写出正确单词,1.When you heat a metal,it _(膨胀).,2.Steel is a _(混合物)of iron and other,_(物质).,3.Here is a table with the metals that _(反应),most at the top.,expands,mixture,substances,react,3/27,4.Iron does not _生锈)in dry air.,5._(煮沸)the water for three minutes.,6.Iron rusts in _(普通)water.,7.In _(总结),walking is a cheap,safe and,enjoyable form of exercise.,8.The conference marked an important _(阶段)in,the two countries relationship.,rust,Boil,ordinary,conclusion,stage,4/27,.补全短语,1.a mixture _一个与混合物,2.think _想象;想出,3._the top of在顶部,4.react _与反应,5.add._.把加入到,of,of,at,with,to,5/27,6.keep.out _不让进入,7.put._order按次序排列,8.find _查明;搞清,of,in,out,6/27,.阅读导引,1.查阅一下元素周期表,看一下文中包括金属与水和氧气反应情况。,2.在课文中找出描写试验现象句子。,7/27,Step 1Leading in,Look at the following pictures and write down their English names.,balance,test tube,Bunsen burner,flask,8/27,Discussion:,What substances do you know?Can you speak them in,English?,_,_,Oxygen,potassium,sodium,calcium,magnesium,aluminium.,9/27,Step 2Fast Reading,Think it over and summarize the general idea of the,text.,Passage A mainly talks about _;,Passage B shows us _,_.,the reaction of metals,how iron reacts with air and with,water,10/27,Step 3Careful Reading,.Read the text carefully and choose the best answers.,1.According to Passage A,we know that_is often used in cars,and_is often used in electrical equipment.,A.steel;copperB.iron;zinc,C.steel;ironD.iron;copper,11/27,2.According to the table,which metal is the most suitable to make our daily kitchenware?,A.Zinc.B.Iron.,C.Copper.D.Magnesium.,12/27,3.Which is NOT the equipment that is needed in the experiment of“Iron in dry air”?,A.Cotton wool.B.Oil.,C.Iron nails.D.Test tube holder.,13/27,.Read Passage B and place the following sentences in correct order.,1.Put two or three clean nails in the water.,2.Leave the tube for one week.,3.Half-fill a test tube with water.,4.Add some oil to the water.,5.Boil the water for three minutes.,14/27,15/27,.Sentence explanation.,1.When we use metals,it is important to know how,they react with different substances,for example,water,and oxygen.,分析:(1)这是一个主从复合句,_引导一个时间状语,从句,主句中_作形式主语,真正主语是to know,how.oxygen.。,when,it,16/27,(2)主句中包含一个_引导宾语从句。,句意:当我们使用金属时,了解金属与不一样物质怎样,发生反应,比如水和氧气,这一点很主要。,how,17/27,2.Here is a table with the metals that react most at the top,and the metals that react least at the bottom.,18/27,分析:,19/27,句意:_,列于顶部金属反应最,猛烈,底部则最迟缓。,这里是一张金属反应表,20/27,Step 4Retelling,Fill in the blanks with proper words according to,Passages A and B.,Metals are very important,so when using them we,should know how they 1._with different substances.,Take iron used in 2._equipment for example,when 3._in oxygen,it will react slowly.When it is,react,electrical,heated,21/27,put together with water or steam,there will be a partial,4._.,reaction,22/27,So in order to find out if iron 5._in dry air,in,air-free water and in 6._water,we will have a,simple scientific experiment.The first part of the,experiment shows that iron doesnt rust in dry air.,rusts,ordinary,23/27,In the second part of the experiment,boil the water,for three minutes to make sure there is no air in the,water.You add some oil to the water because this,7._air out of it.It also shows thatiron does not rust,in water 8._air.9._,the nails rust in the,tube with ordinary water in the third part of the,10._.,keeps,without,However,experiment,24/27,That is how iron reacts with air and with water.,25/27,26/27,27/27,