仁爱版英语九年级上册Unit-4-Topic-2-Section-C--ppt课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2020/11/21,#,Unit 4 Amazing ScienceTopic 2 Im excited about the things that will be discovered in the future.,Section C,Unit 4 Amazing ScienceTopic,1,Do you want to be,a film star?,an astronaut?,a boss?,a policeman?,Answer my questions loudly!,an actor?,a policewoman?,Do you want to be a film star?,2,Lead-in,Lead-in,3,仁爱版英语九年级上册Unit-4-Topic-2-Section-C-ppt课件,4,Learning Aims,1.Know more about Mars and motivate the,students interest in exploring the space.,2.We should learn key words and sentences:,diameter,storm,be named after sb.,go around,at a distance of,倍数,+asasetc,3.Improve the students reading skills.,Learning Aims1.Know more abou,5,Pre-reading,1.Predict which sentences are true about Mars,_1).Mars looks like a red ball.,_2).The temperature on Mars is very high.,_3).Mars is much larger than the earth.,_4).Mars is too far away for us to reach.,T,F,F,T,predict,2.Listen to the Mp3 and check them.,Pre-reading1.Predict which sen,6,While-reading,Read the text and finish the following tasks.,Task1.Skim the text to grasp its main idea,Task2.Scan the text and complete the mind-map of this text or do 1b.,Task3.Explain some important language points and sentences.,While-reading Read the text an,7,1.Can you give the passage a title?,3.Whats the main idea of this passage?,Mars,2.Whats the article type of the passage?,Expository writing(,说明文）,It tells us about Mars,including its name,diameter,distance,shape,climate,gravity,temperature and distance etc.,Task1.Skim the text to grasp its main idea,1.Can you give the passage a t,8,Task2 Scan the text and complete the mind map.,name,color,shape,diameter,climate,gravity,temperature,distance,?,?,?,?,?,?,?,?,air,?,Four students a group to work and find out the answers in the text,write them down on the paper.,Task2 Scan the text and comple,9,What can you learn about Mars?,name,color,shape,diameter,climate,gravity,temperature,distance,Mars,Red and orange,ball,Between minus 138 degrees celsius and 28 degrees celsius,air,0.13%oxygen,storm,Two-fifths,53%,8 months,What can you learn about Mars?,10,solar system,太阳系,sl(r),Mars,The fourth planet from the sun,solar system 太阳系sl(r)Mar,11,Mars is the fourth planet from the sun in our solar system and,is named after,Mars,the Roman god of war,.,Why is it called Mars?,the Roman god of war,被命名,罗马战神,Mars is the fourth planet from,12,It is much smaller than the earth.Its,diameter,is,53%as wide as,that of the earth.,daimit,It is much smaller than the ea,13,During spring and summer,the strong,storms,can cover the whole surface of Mars.,During spring and summer,the,14,gravity,gravity,15,n.,引力，重力,The,gravity,on its surface is about 40%as strong as it is on earth,.,/grvti/,The gravity on its surface,16,It takes a spaceship about,eight months,to reach Mars from the earth when the two planets,are closest to,each other.,地球到火星的最近距离约为,5500,万公里，最远距离则超过,4,亿公里。,55 million kms,It takes a spaceship about eig,17,Scan the text and find out key words,、,phrases and sentences.(,英汉互译,),1.be named after_2.at a distance of_,3.be covered by_ 4.be closet to_,5.,围着,.,转,_ 6.,太阳系,_,7.,直径,_ 8.,风暴,_,9.,重力、引力,_ 10,搜寻,_,11.Itsdiameteris,53%aswideas,thatoftheearth.,12.Marsgoesaroundthesun,atadistanceof,about228millionkilometers.,13.You can tell which planet is Mars because it is bright red in the night.,14.So a person who weighs 90 kilos on earth weighs 36 kilos on Mars.,15.It,takes,a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other.,被命名为,有,的距离,被,覆盖,与,最靠近,go around,solar system,diameter,storm,gravity,search for,它的直径是地球直径的,53%,。,火星在距离太阳,2,亿,2,千,8,百万公里处围绕着太阳转,。,你能说出哪个行星是火星是因为它是在夜空中是红亮的。,因此一个在地球上重,90,公斤的人在火星是重,36,公斤。,当两个行星彼此最近时，从地球上到火星上要花费宇宙飞船大约,8,个月的时间。,Scan the text and find out key,18,Difficult language points,1.be named after/be named by,.,1)be covered by+,（人,/,组织,/,机构,.,）,:,表动作,由,.,承担,/,负担,/,支付,;,被,.,掩护,/,报道,/,监视,/,控制等等,表示抽象的概念,后面接人,机构,或者组织,.,All roads have been covered by the police.,Task3,万达广场,以公司“万达”为名,。,/,阿里巴巴是,由马云命名的,。,Alibaba Corporation was named,by,MaYun.,Wanda Plaza was named,after,Wanda.,2)be covered with+,（雪,/,草地,/,烟雾,.,）,:,被,.,覆盖,表状态,表示具体的覆盖,.,如被雪,/,草地,/,布,/,被子,/,盖子,/,罩子等东西盖住,.,The ground,is covered with water.,2.be covered by/with,Difficult language points1.be,19,3.,倍数的表达法,1,)Its diameter is,53%as wide as,that of the,earth.,2,)The gravity on the surface of Mars is about,two-fifths as strong as,it is on earth.,A+be+,倍数,+,as,+adj./adv.,原级,+,as,+B,A+be+,倍数,+adj./adv.,比较级,+,than,+B,1,）,Its diameter is 53%,wider,than,that,of the earth.,2,）,The gravity on the surface of Mars is about two-fifths,stronger,than,that,on the earth.,拓展,改写,归纳,可以是百分数、分数等,3.倍数的表达法1)Its diameter is 53%,20,Exercise1,用适当 的词填空。,1.The surface of the earth is covered_,(by/with)75%water.,2.The weather report says that there will be a strong s_ this afternoon.,3.It _(,花费）,me three hours to finish the work.,4.The Hope Primary school is named _ PingAn.,5.Its diameter is 53%_(wide)than that of the earth.