高中英语选择性必修二 Unit 1 Science and Scientists Period 3 Discovering useful structures 学案（原卷版）

1、Unit 1 Science and Scientists Period3 Discovering useful structures 导学案1.To further grasp the structural features of predicative clauses and their ideographic functions.2.To strengthen the ability of using predicative clauses in context3.To promote the ability of text analysis and logical reasoning

2、competence.一: 从课本P2-p3课文中找到所有含有表语从句的句子，并划出其中的表语从句。_二: 表语从句知识竞赛填空。在复合句中作_的从句，叫作表语从句。它位于主句的_之后，对主语进行解释、说明，使主语的内容具体化。引导词用法例句从属连词that、whether(不能用if)that在从句中_成分，that没有实际意义，不可省略；whether意为_My belief is _I will succeed by working hard.我的信念是通过努力我会成功。The most pleasant thing of the rainy season is _one can be

3、entirely free from dust.雨季最令人愉快的事情是完全没有灰尘。The problem is _we can find them there.问题是我们能否在那里找到他们。because说明主语所表示的事件发生的原因，意为_He has heart disease. That is _he has been smoking too much.他有心脏病。那是因为他抽烟太多。as if/though从句表示的情况发生的可能性较小时常用_It seems as if he_ know the answer.他好像不知道答案。连接代词who(ever)、whom(ever)、wh

4、ose、what(ever)、which(ever)等在从句中作主语、宾语、表语、定语等You can be _you want to be.你可以成为你想做的任何人。Tom is no longer_ he used to be.汤姆不再是过去的那个他了。连接副词when、where、why、how等在从句中作状语，表示时间、地点、原因、方式等This is _I dont agree with you.这就是我不同意你的地方。The question is _we can get in touch with him.问题是我们怎样才能和他联系上。That is _I got wet thr

5、ough.所以我才被淋湿了。注意事项(1)that与what的区别that引导表语从句时，是连词，在从句中不作成分；what是连接_，引导表语从句时，在从句中作_。My opinion is _we should communicate with parents frequently.我的意见是我们应该经常和父母沟通。 (2)because与why的区别because引导表语从句时强调_，why引导表语从句时强调_。She often comes late. Thats _she has a baby to take care of.她经常迟到。那是因为她有一个孩子要照顾。She has a

6、baby to take care of. Thats _she often comes late.她有一个孩子要照顾。那就是她经常迟到的原因。 点睛名词reason作主语时，后面的表语从句表示原因时要用that引导，而不用because。 (3)虚拟语气用于表语从句在表示建议、劝告、命令等含义的名词后的表语从句中，谓语动词用_，should可以省略。My suggestion is that_ a discussion about this matter instead of just laying it aside.我的建议是我们应当讨论一下这件事，而不应该只是把它放在一边。The doc

7、tors advice is _more exercise.医生的建议是我们应该多做运动。as if/as though引导的表语从句如果是事实，就用_语气；如果与事实不符，就用_ (用一般过去时表示现在，过去进行时表示现在进行，过去完成时表示过去，could/would/might动词原形表示将来)。Tom likes to talk big as if he _an important person.汤姆喜欢说大话，好像他是一个重要人物似的。Dark clouds are gathering. It looks as if_.乌云正在聚集。看起来好像要下雨了。(与事实相符)三：单句语法填空

8、1The reason for your mistake is _ you lack confidence in yourself.2The doubt is _ has got away with the document.3Shes been leading through the race, but it now looks_ shes tiring.4The best moment for the football star was _ he scored the winning goal.5Tom left immediately. Thats _ he only had 10 mi

9、nutes to get to his next job!6What Toms parents really doubt is_he will recover from the serious disease soon.7Every year, _ makes the most beautiful kite will win a prize in the Kite Festival.8What your father wants to know is _ you are getting on with your studies.9My parents are very kind to me a

10、nd always let me do _ I think I should do.10You are saying that everyone should be equal, and this is _I disagree.四：使用文章中的信息和表语从句回答下列问题。1. What was it that John Snow showed to the world?What John Snow showed to the world was_.2. What was Snows discovery in two particular streets in London?Snows disc

11、overy in two particular streets in London was that_3. What was Snow determined to find out during the 1854 outbreak of cholera in London?What Snow was determined to find out was why _4. What were the exact places (Snow marked on the map? )The exact places Snow marked on the map were where_5. What wa

12、s the finding that Snow announced?Snows finding was that _五：语境填空。David is talking to Maria about their scientific research project. First complete Davids lines (A-E), using the words in the box. Then put Davids lines in the correct order and practice the conversation.as if that what who when How why

13、 whose which whetheras if that what who when How why whose which whetherA: Absolutely ! You may not believe it, but that was _happened at the initial stage of our groups research on developing a vaccine for malaria.B: Yes, it is. And it seemed _all the theories were useful, but the fact was_ we coul

14、dnt persuade one another that one theory was better than another.C:Exactly The problem was not about _all our theories were equally good, but in deciding _theory to depend upon.D: We realized that what we cared about was not_ aspect we needed to develop a theory in, but rather _we can reduce the cos

15、t of a vaccine without reducing its effect!E: Youre right. At last, we became focused on the key issue, which was _we had to Cary out the research in the first place.David is talking to Maria about their scientific research project. First complete Davids lines (A-E), using the words in the box. Then put Davids lines in the correct order and practice the conversation.Maria: This mix of theory and data is one of the key characteristics of what we call science.David: _ _Maria: