高中英语人教版必修三学案：Unit4Astronomythescienceofthestrars第二篇课文(教师版).doc

第  PAGE 4 页 共  NUMPAGES 4 页 教学内容 学习目标: 1.知识与能力：To grasp the main idea and know the language points in this passage 2过程与方法：To know how the story develops 3.情感态度价值观：To master the main idea of the text . 学习重点: To know the main idea of the passage and some language points.. 学习难点: To master the main idea of the text and some language points.. 【学案使用说明】提前认真预习课文的前提下完成学习指导即时感悟【课前预习】请同学们把下列短语翻译成汉语 1.乘宇宙飞船 _________ 2.被向后退到座位上________ 3.有机会做某事__________ 4.去旅行_____________ 5.向某人解释某事____________ 6.离开_____________ 7.挣脱地球引力_____________ 8.掉回到_____________ 9.离…..很远____________ 10.接近_____________ 11.感到高兴\振奋____________12.迈步向前_____________ 13.摔倒_____________ 14.既然_____________ 15.掌握\精通_____________ 16.突发\爆发_____________ 【自主 合作 探究】细读课文，完成下列练习。 1,but it will not be as strong a pull as the earth’s.……,但它不如地球的引力那么强。此为as...as...比较结构： [解析] as+adj +a(an)+n+as是一个固定结构： I cant buy as good a book as that one=I cant buy a book as good as that one.我不能买到和那本书一样的书。 (1)他和他的父亲一样是个帅男人。 _________________________________________________________ (2)我希望你和你的爷爷一样过着健康幸福的生活。 _________________________________________________________ 基本用法：as+形容词或副词原级+as分句。否定形式为not as/so...as。 John is _____________ Bob. 约翰与鲍勃一样聪明。 The girl was __________________ she was beautiful. 这姑娘既漂亮又聪明。 2,I found I was carried twice as far as on the earth and fell over.…… [解析]倍数表达法：(1)...times as...as... 是……的几倍(2)...times+形容词/副词比较级+than(3)...times+the size/height/length/width/depth+of 我的房子是我父母房子的两倍大。 My house is two times as big as my parents’. My house is two times bigger than my parents’. My house is two times the size of my parents’. 即学即用：Asia is _______________________ Europe.（三种方法） 亚洲的大小是欧洲的4倍。 3. After a while I got the hang of it and we began to enjoy ourselves. get the hang of 理解；领会 你理解我所说的了没？ ___________________________________________ 4、“Oh, dear,” I cried,“walking does need a bit of practice _________ gravity has changed.” no