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1、2014 年八年级下册英语 Module 3 unit2 导学案(外研版)dule 3 urne t spaeUnit 2 e have nt fund life n an ther planets et学习目标：1 知识目标：掌握重点单词和词组的意思及用法2 能力目标：T rite abut spae travel using present perfet tense3 情感目标：通过本的学习增加学生的天知识，培养学生的民族意识。重点难点整体把握，理清思路。并能根据科学故事图片写短。学习过程：前延伸Read the ne rds befre lass内探究：（一） 、情景导入： r in p
2、airs L at the piture and tal abut hat u n abut hinese spaeships （二）多层阅读:I Fast reading Read the passage and hse the best title fr it （）( ) 1 Anne ut there? ( ) 2 Life n earth( ) 3 The sun and the stars ( ) 4 The stars at nightII areful reading Read again, he （ ）the true sentenesThe earth is a star (
3、 )The sun is a star ( )There is re than ne galax in the universe ( ) The light fr the stars in ther galaxies has travelled fr a lng tie t reah us ( )Sientists have reeived an essages fr spae ( )Spaeships have visited st f the universe ( ) III plete the passage ith the rds and expressin in the bxunia
4、te dubt envirnent nne slar sste universeIs there life n ther planets? There are eight planets in ur _, but _ f the has a(n) _lie that f the earth Spaeships fr the earth have dne surves f ther planets, but the have nt fund an life there h has n ne fr ther planets tried t _ ith us? It is true that sie
5、ntists have nt disvered life n ther planets in the _ et, but se sientists d nt _ that the an find it se da(三 )、 精讲点拨：1 Sientists thin that there has been life n the Earth fr hundreds f illins f ears 科学家认为地球上的生命已经有亿万年了。illins f 数百万 hundreds f 数百thusands f 成千上万 billins f 数十亿eg There are billins f star
6、s in the Galax, and ur sun is nl ne f the银河系中有数十亿颗恒星，我们的太阳只是其中的一个。2 Nne f the has an envirnent lie that f the earth, s sientists d nt thin the ill find life n the 他们中没有一个有像地球这样的环境，因此科学家们认为在他们上面找不到生命。 nne f 表示（三个以上）一个也没有。做主语时，谓语动词可用单数或复数。eg Nne f us has/have been t the ars我们中没一个去过火星。The are ver far a
7、a and their light has t travel fr an ears t reah us 它们离我们很遥远，它们的光必须要经过很多年才能到达地球。reah 为_ 动词，后接宾语。arrive 为_ 动词，后接介词_构成动词短语。介词_ 后接大地方，介词_ 后接小地方。若后跟地点副词 here, there, he 等，介词省略。get 为_ 动词，和介词_ 连用后才可接宾语。若后跟地点副词 here, there, he 等，介词省略。4 S h large is the universe? Its ipssible t iagine所以宇宙有多大？我们无从想象。句型: It i
8、s + 形容词 + t + 动词原形，意思是“做某事很”eg It is diffiult t read these rds 读这些单词很难。ith s an stars in the universe, are e alne, r is there life ut there in spae? 宇宙中有这么多星球，我们是孤独的吗？或者太空中还有其他生命存在呢？ith + 名词 + 介词短语，表示伴随情况，意思是 “带着”。 eg r Zhang is ing ith a b in his hands张老师手里带着一书进了（四）：Test: 单项选择：1She _the teahers ffi
9、e u an find her thereA has been t B has gne t has left D ent2 I _t anada Its s beautifulA nt g B have gne dnt g D have been3 -Has Dave e _? -es, she has _been here fr 10 inutesA et, alread B alread, et alread, alread D et, et4 _ur help , I finished the r easilA ith B ithut Under D BelIt s ipssible _
10、 h large is the Galax A iagine B t iagine iagining D iagined我是小小翻译家：1 地球是一颗行星，它围绕着太阳转动。The Earth is a planet and it _ _ the Sun2 我们还没有在其它行星上发现生命。e have nt fund life _ _ _ planets _3 科学家们已经在宇宙中发现了许多其他星系。Sientists have disvered an ther galaxies _ _ _4 太阳系只是我们星系的一小部分。The slar sste is _ _ _ _ ur Galax 宇宙中有这么多的恒星，我们是孤独的吗？太空中还有其他生命吗？_ s an stars _ the universe, _ _ _ _, r _ _ life ut there _ _?三、后拓展：1 Read and rite the phrases 2 Previe Unit 3
