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　　Unit 4  Astronomy: the science of the stars
　　Part I. Leading in (4’)
　　Play a word game: what is missing?
　　You have 5 seconds to memorize the 5 words or phrases on the screen, then one of them will  
　　disappear. Try to find the missing word/phrase as quickly as possible .
　　Attention: if you find the word/phrase just stand up and give you answer . If your answer is correct
　　you will get 1 point for your group(tell us your group number after answering the question).Your answer should include the pronunciation and the spelling
　　Part II. basic words (6’)
　　1. 自主学习: Tasks: Read the sentences aloud(2’) then mammary by yourselves.(2’)
　　1） exist
　　教材原句：（P26)They laid eggs too and existed on the earth for more than 140 million years.
　　它们也生蛋，在地球上存在了一亿四千多年。
　　真题再现： In my view, new architectural styles can exist perfectly well alongside an older style. (2014 安徽 阅读D) 在我看来，新的建筑学风格可以很完美的与旧的风格共存
　　知识拓展：The old man found it difficult to exist on his pension(退休金,养老金) alone.
　　There exists a useful way to solve the existing problem now.
　　No one know when the tradition came into existence.
　　自我总结：exist 1)v.生存  phrase: 靠……生存_______________
　　sentence pattern:__________________
　　2)n.  ___________ phrase:开始存在_________________
　　3)adj.____________现存的
　　2） puzzle
　　教材原句：（P27)How life began on earth is one of the biggest puzzles that scientists found hard to solve.生命究竟是如何开始的，这是科学家们发现难以解决的最大难题之一
　　真题再现： People have long puzzled over how the Egyptian moved such huge rocks.
　　(2015 四川 阅读E)
　　很长时间以来人们一直苦思冥想埃及人是如何移动这些巨大的石块的。
　　知识拓展：Why Mona Lisa is smiling is still a puzzle.
　　The scale of my puzzlement makes no sense to them.
　　It puzzles scientist how these creatures can survive in such severe conditions.
　　You needn't puzzle over every single word or phrase in the book.
　　To be honest, I am kind of puzzled about my future career.
　　She had a puzzled look on her face.
　　Frankly, these findings are a little puzzling to me.
　　自我总结：puzzle  1)n. ____________(meaning) 对比 ______________n.迷惑迷茫
　　2)v.      vt. ___________(meaning)
　　vi. phrase: _________________ 思索，仔细琢磨
　　3)adj.  ____________感到迷惑的
　　_____________令人迷惑的
　　2.活学活用（幸运大转盘: who is the lucky dog?）(2’)
　　改错:1. There still exist a disagreement about whether social stability should be maintained.
　　2.If it isn’t for Rachel Carson, the environmental movement might not exist today.
　　语法填空:
　　1. Almost all of us serve people we do not know, and even of whose _______ (exist) we are ignorant.
　　2. Mary was reading a poem with a           expression on her face. Its deeper meaning remained a         for her.
　　Part III . difficult words & phrases (20’)
　　1. 体会高考 Do the following exercises(1’)
　　1). (16天津完型) Last summer, she wanted to join our local swim team. She practiced hard and    
　　finally made it. The team practice, however was a rough start. She coughed and choked and could 
　　hardly survive her first few weeks. Hearing her coughing bitterly one night, I decided to  22 her
　　from it all. But Cathy wop early next morning, wearing her swimsuit ready to go!
　　A．pull     B. tell        C. hide     D. fire.
　　2). On the day Joe graduated, he presented the teacher ______ his most precious possession --- the picture of a bright yellow sun. (2015重庆 完型改编)
　　3）If you keep on, you'll succeed ________. （2014高考单选）
　　A. in time     B. at one time   C. at the same time   D. on time
　　2. 高考考点总结Work in groups to look up the words in the dictionary（维克多）and have a discussion(3’)  Group1-4 : pull   Group 5-8: present   Group 9-12: in time
　　Each group should decide on a person to show your work.
　　1). pull:  (v) different meanings and key phrases
　　2). present : different parts of speech(词性) and their usages
　　3) in time: similar phrases