山西省河津市第二中学高一英语 《A lesson in a lab 》Reading1学案

河津市第二中学高一英语学案：《A lesson in a lab 》Reading1【问题设计】Reading and Vocabulary (P44)Step1 Reading1.Read the passage A and do Activity 1and 22.1.Read the passage A and B again and do Activity 3_6Step2 Language points :1.It is hard to think of a world without metals.it 是形式主语,真正的主语为 to think of a world without metals,这是英语中一个很重要的句型。It is +adj.+ to do 句型中 it 作形式主语，真正的主语为动词不定式。It is hard to think of a world without friendship.在文中找出另一个 it 作形式主语的句子_______________________2.When we use metals,it is important to know how they react with different substances.使用金属时,要了解金属和不同的物质如何发生反应,这一点很重要。 When 引导_________从句。It 作形式主语，how 引导的从句作 know 的宾语。react with... 对……起(化学)反应Potassium reacts with oxygen easily. 钾和氧容易起反应。react to...对……产生反应,回应The eye reacts to the light.眼睛对光会起反应。He didn’t react to their words.他对于他们的话没作反应。react against... 反对/反抗... Children tend to react against their parents by going against their wishes.3.The reaction of metals with these substances can be put in order.put...in order 把……按顺序排列keep order 维持秩序 in good order 井然有序 out of order 顺序乱的;出故障的4.Leave the tube for one week.leave v.使......处于某种状态.常用于“leave+宾语+宾补”如：Leave it where it is.5.add vt. 加;加起来;添加;补充说vi. 增添;添加(常与 to 连用) 【典型例句】If you add three to seven,you get ten.3 加 7 等于 10。The news added to his enjoyment. 这条消息增加了他的快乐。 Add up these numbers for me. 为我合计一下这些数字。 The cost adds up to 10 million yuan.成本总计达到一千万元。 add A to B 把 A 加到 B 上 add sth./that 补充说 add to 增加 add up 合计 adds...