高中英语 Unit 4 astronomy vocabulary导学案

1、 陕西省榆林育才中学高中英语 Unit 4 astronomy vocabulary导学案考纲词汇填写A识记法填写1_ n学说；理论 2_ n. 大气层；气氛；氛围3_ adj. 基本的；基础的 4_ adj. 有害的5_ n& vt. 拉(力)；拖；牵引 6. _ n. 体系，系统7. _ prep. 不同，不像 8. _ vi 存在，生存9. _ n. 卫星 10. _ vi & vt. 漂浮B. 构词法填写1astronomy n天文学_ n天文学家2violent adj.猛烈的；激烈的；强暴的_adv.猛烈地；激烈地；强暴地_ n暴力3unlike prep.不同；不像_ adj.未

2、必的，不大可能的4exist vi.存在；生存_ n存在；生存；生活方式5gentle adj.温和的；文雅的_ adv.温文尔雅地6physicist n物理学家_ n内科医生7exhaust vt.用尽；耗尽；使筋疲力尽_ adj.筋疲力尽的8puzzle n谜；难题；vt.& vi.(使)迷惑；(使)为难_ adj.困惑的，迷惑不解的_ adj.令人困惑的，令人费解的探 究 案I. 独立完成下面的语音题：找出与所给单词划线部分发音相同的单词。1. multiply A. system B. biology C. oxygen D. fly2. theory A. birth B. thu

3、s C. this D. breathe3. exist A. extinct B. exhaust C. exercise D. excellent4. cheer A. Christmas B. machine C. school D. chain5. atmosphere A. here B. there C. were D. where6. question A. reaction B. suggestion C. station D.population7. amount A. account B. ought C. group D. touch8. cheered A. block

4、ed B. crashed C. pulled D. floated9. cheers A. blocks C. crashes C. pulls D. floats语音知识归纳1、 y的发音规则y通常发1. / / pity, funny, twenty; 2. / a / cry, fly, spy二、th的发音规则th通常1. 在介词、冠词、代词、连词中，以及e, er前读/ /; 2. 在词首和词尾多读/ /，但there, their, this, that, these, those等读/ /特殊：1. mathematics, math, mouths读/ /; 2. Smoot

5、h, worthy, clothing, bathe读/ /; 3. 以th结尾的复数读/ / baths, mouths, cloths。例外：maths, mouths/ /三、ex的发音规则ex在本身是重读或次重读时读/ eks / expert, extra, exercise, excellent, exhibition, explanation特殊：1. 为非重读音节，后面是原因字母读/ gz / exact, exam, exist, examine, example; 2. 为非重读音节， 后面是辅音字母读/ks /excite, expect, extend, extraor

6、dinary, except, excuse, express, expensive, experience, experiment, explain四、ch的发音规则ch & tch通常读/t /特殊：1. /k / headache, Christmas, chemical, school, stomach, chemistry, architecture; 2. / / machine五、ere的发音规则ere读1. / / here, atmosphere; 2. / e / where, there; 3. / : / were六、tion的发音规则tion通常读/n / actio

7、n, station, attention特殊：/tn / suggestion, question七、ou的发音规则ou通常发/ au / mouth, mountain特殊：1. /u: / group, wound, you, youth; 2. / / anxious, dangerous, curious, famous, moustache, nervous, obvious, serious, mysterious; 3. / / country, couple, trouble, courage, cousin, encourage, touch, young; 4. /: /

8、 cough, ought8、 -ed的发音规则ed在1. 清辅音后读/ t / laughed, ; 2. 浊辅音和元音后读/ d / refused, charged; 3. /t/, /d/ 后读/d / completed, guarded9、 -(e)s的发音规则(e)s在1. 清辅音后读/s / books, stops; 2. 浊辅音和元音后读/ z / dogs, cows, goes, plays; 3. /s/, /z/, / /, / t /, /d /后读/z / discusses, noses, fishes, speeches, watches, language

9、sII. 单词拼写1. In our solar _ （体系）eight planets circle around the sun.2. Each _（宗教）and culture has its own ideas about how life began on earth.3. However, according to a widely accepted _（理论），the universe began with a “ Big Bang” that threw matter in all _（方向）.4. The earth became so _（激烈的）that it was n

10、ot clear whether the shape would last or not.5. They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earths _（大气层）.6. It was not immediately obvious that water was to be _（至关重要） to the development of life.7. What many scientists believe is that the cont

11、inued presence of water allowed the earth to dissolve _ （有害的）gases and acids into the oceans and seas.8. They produced young generally by _ （下蛋）eggs.9. They laid eggs too and _ （存在）on the earth for more than 140 million years.10. _（因此）they have, in their turn, become the most important animals on the planet.11. They are putting too much carbon dioxide into the atmosphere, which _（阻止）heat from escaping from the earth into space.12. Before we left, Li Yanping explained to me that the force of _（万有引力）would change three times on our journey