高中英語選擇性必修二 Unit 1 Science and Scientists Period 3 Discovering useful structures 學案（原卷版）

1、Unit 1 Science and Scientists Period3 Discovering useful structures 導學案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: 從課本P2-p3課文中找到所有含有表語從句的句子，并劃出其中的表語從句。_二: 表語從句知識競賽填空。在復合句中作_的從句，叫作表語從句。它位于主句的_之后，對主語進行解釋、說明，使主語的內(nèi)容具體化。引導詞用法例句從屬連詞that、whether(不能用if)that在從句中_成分，that沒有實際意義，不可省略；whether意為_My belief is _I will succeed by working hard.我的信念是通過努力我會成功。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沒有灰塵。The problem is _we can find them there.問題是我們能否在那里找到他們。because說明主語所表示的事件發(fā)生的原因，意為_He has heart disease. That is _he has been smoking too much.他有心臟病。那是因為他抽煙太多。as if/though從句表示的情況發(fā)生的可能性較小時常用_It seems as if he_ know the answer.他好像不知道答案。連接代詞who(ever)、whom(ever)、wh

4、ose、what(ever)、which(ever)等在從句中作主語、賓語、表語、定語等You can be _you want to be.你可以成為你想做的任何人。Tom is no longer_ he used to be.湯姆不再是過去的那個他了。連接副詞when、where、why、how等在從句中作狀語，表示時間、地點、原因、方式等This is _I dont agree with you.這就是我不同意你的地方。The question is _we can get in touch with him.問題是我們怎樣才能和他聯(lián)系上。That is _I got wet thr

5、ough.所以我才被淋濕了。注意事項(1)that與what的區(qū)別that引導表語從句時，是連詞，在從句中不作成分；what是連接_，引導表語從句時，在從句中作_。My opinion is _we should communicate with parents frequently.我的意見是我們應該經(jīng)常和父母溝通。 (2)because與why的區(qū)別because引導表語從句時強調(diào)_，why引導表語從句時強調(diào)_。She often comes late. Thats _she has a baby to take care of.她經(jīng)常遲到。那是因為她有一個孩子要照顧。She has a

6、baby to take care of. Thats _she often comes late.她有一個孩子要照顧。那就是她經(jīng)常遲到的原因。 點睛名詞reason作主語時，后面的表語從句表示原因時要用that引導，而不用because。 (3)虛擬語氣用于表語從句在表示建議、勸告、命令等含義的名詞后的表語從句中，謂語動詞用_，should可以省略。My suggestion is that_ a discussion about this matter instead of just laying it aside.我的建議是我們應當討論一下這件事，而不應該只是把它放在一邊。The doc

7、tors advice is _more exercise.醫(yī)生的建議是我們應該多做運動。as if/as though引導的表語從句如果是事實，就用_語氣；如果與事實不符，就用_ (用一般過去時表示現(xiàn)在，過去進行時表示現(xiàn)在進行，過去完成時表示過去，could/would/might動詞原形表示將來)。Tom likes to talk big as if he _an important person.湯姆喜歡說大話，好像他是一個重要人物似的。Dark clouds are gathering. It looks as if_.烏云正在聚集?？雌饋砗孟褚掠炅恕?與事實相符)三：單句語法填空

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語從句回答下列問題。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：語境填空。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: