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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 context
3.To promote the ability of text analysis and logical reasoning 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 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)、
whose、
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 don't 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 through.所以我才被淋湿了。
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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. That's ______________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 baby to take care of. That's _______________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
①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 doctor's advice is ________________________more exercise.医生的建议是我们应该多做运动。
②as 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
1．The reason for your mistake is __________________ you lack confidence in yourself.
2．The doubt is __________________ has got away with the document.
3．She's been leading through the race, but it now looks__________________ she's tiring.
4．The best moment for the football star was __________________ he scored the winning goal.
5．Tom left immediately. That's __________________ he only had 10 minutes to get to his next job!
6．What Tom's parents really doubt is________________he will recover from the serious disease soon.
7．Every year, ________________ makes the most beautiful kite will win a prize in the Kite Festival.
8．What your father wants to know is ________________ you are getting on with your studies.
9．My parents are very kind to me and always let me do ________________ I think I should do.
10．You 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 Snow’s discovery in two particular streets in London?
Snows discovery 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 was the finding that Snow announced?
Snow's finding was that __________________________
五：语境填空。
David is talking to Maria about their scientific research project. First complete David's lines (A-E), using the words in the box. Then put David's lines in the correct order and practice the conversation.
- A: Absolutely ! You may not believe it, but that was ___________happened at the initial stage of our group's research on developing a vaccine for malaria.
- B: Yes, it is. And it seemed _______________all the theories were useful, but the fact was_________ we couldn't 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 cost of a vaccine without reducing its effect!
- E: You're 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 David's lines (A-E), using the words in the box. Then put David's 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.
- Maria: With your theoretical framework?
- Maria: Deciding on a theory is definitely of critical importance.
- Maria This was when you should have calmed down and got down to doing some sold work.
- Maria: So what happened in the end?
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