高中英语Module 5 A Lesson in a Lab 英语教学课件设计.pptVIP

Which of the following reacts most easily with steam? A. Potassium.???? ?????? B. Iron.???? ? C. Magnesium.?? ?????? D. Calcium. 2. Which of the following reacts least with water? A. Copper. ? ? ? ? ? ? ? ? ?B. Iron.???? C. Aluminium.?? ?? ?????? D. Sodium. 3. What can we learn mainly from Passage B？ A. How iron reacts with air.????????? B. How iron is made. C. How we can prevent iron from rusting.? D. How iron reacts with steam. 【分析】 ①本句是一个主从复合句。 ②When引导的是_________从句。 ③在主句中，it是形式主语，真正的主语是后面的to know how they react with different substances。其中how they react ... oxygen是宾语从句，作know的宾语。 时间状语 【句意】 当我们使用金属时，要了解它们和不同的物质（例如水和氧气）如何发生反应，这一点很重要。 【仿写】 当你们做实验时，要记住如何保护你们自己不被烧伤，这一点很重要。 When you are doing the experiment, it is important to remember how to protect yourselves from being burned. 2. Here is a table with the metals that react most at the top, and the metals that react least at the bottom. = A table is here. At the top of the table we can see the metals that react most and at the bottom of the table we can see metals that react least. ①本句是一个主从复合句。 ②句子的主干是Here is a table，这是一个由here置于句首引起的倒装句。 ③with ... bottom在句中作后置定语，修饰a table。 ④that react most和that react least是定语从句，分别修饰两个metals。 【句意】 这是一张金属反应表，位于顶部的金属反应最剧烈，底部的则最缓慢。 【仿写】 这是一张花名表，位于顶部的学生得分最高，底部的则最低。 Here is a name list with the student who got the highest score at the top, and the student who got the lowest score at the bottom. 3. Our chemistry teacher, Mr Longford, takes us to public science lectures about four times a term, and these are always very interesting, as the lecturers are people who have made real discoveries in their area of science.?? 【分析】 ①本句是一个由and连接的并列复合 句。 ②前一个分句是一个简单句。 ③后一个分句含有一个由as引导的原因 状语从句。原因状语从句中又含有一 个由who引导的限制性定语从句，修 饰先行词_______。 people * 1. To understand the two passages about scientific experiments. 2. To summarize and retell the main stages of the experiments. 3. To learn some useful words a