仁爱版九年级英语上册课件：Unit-4-Topic-2-Section-C.pptx

1、Unit 4 Amazing ScienceTopic 2 Im excited about the things that will be discovered in the future.Section C Do you want to be a film star?an astronaut?a boss?a policeman?Answer my questions loudly!an actor?a policewoman?Lead-in Learning Aims1.Know more about Mars and motivate the students interest in

2、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+asasetc3.Improve the students reading skills.Pre-reading1.Predict which sentences are true about Mars_1).Mars looks like a red ball._2).The temperature on Mars is very high._

3、3).Mars is much larger than the earth._4).Mars is too far away for us to reach.TFFTpredict2.Listen to the Mp3 and check them.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

4、.Explain some important language points and sentences.1.Can you give the passage a title?3.Whats the main idea of this passage?Mars2.Whats the article type of the passage?Expository writing(说明文）说明文）It tells us about Mars,including its name,diameter,distance,shape,climate,gravity,temperature and dist

5、ance etc.Task1.Skim the text to grasp its main ideaTask2 Scan the text and complete the mind map.namecolorshapediameterclimategravitytemperaturedistance?air?Four students a group to work and find out the answers in the text,write them down on the paper.What can you learn about Mars?namecolorshapedia

6、meterclimategravitytemperaturedistanceMarsRed and orangeballBetween minus 138 degrees celsius and 28 degrees celsiusair0.13%oxygen stormTwo-fifths53%8 monthssolar system 太阳系太阳系sl(r)MarsThe fourth planet from the sunMars is the fourth planet from the sun in our solar system and is named after Mars,th

7、e Roman god of war.Why is it called Mars?the Roman god of war 被命名被命名罗马战神罗马战神It is much smaller than the earth.Its diameter is 53%as wide as that of the earth.daimit During spring and summer,the strong storms can cover the whole surface of Mars.gravityn.引力，重力引力，重力 The gravity on its surface is about

8、40%as strong as it is on earth./grvti/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地球到火星的最近距离约为5500万公里，最远距万公里，最远距离则超过离则超过4亿公里。亿公里。55 million kmsScan the text and find out key words、phrases and sentences.(英汉互译英汉互译)1.be

9、 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.Its diameter is 53%as wide as that of the earth.12.Mars goes around the sun at a distance of about 228 million kilometers.13.You can tell which planet is Mars because it is bright red in the ni

10、ght.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.被命名为被命名为有有的距离的距离被被覆盖覆盖与与最靠近最靠近 go around solar system diameter storm gravity search for 它的直径是地球直径的它的直径是地球直径的5

11、3%。火星在距离太阳火星在距离太阳2亿亿2千千8百万公里处围绕着太阳转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。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因此一个在地球上重90公斤的人在火星是重公斤的人在火星是重36公斤。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。个月的时间。Difficult language points1.be named after/be named by.1)be covered by+（人（人/组织组织/机构机构.）:表

12、动作表动作,由由.承担承担/负负担担/支付支付;被被.掩护掩护/报道报道/监视监视/控制等等控制等等,表示抽象的概念表示抽象的概念,后面后面接人接人,机构机构,或者组织或者组织.All roads have been covered by the police.Task3万达广场万达广场以公司以公司“万达万达”为名为名。/阿里巴巴是阿里巴巴是由马云命名的由马云命名的。Alibaba Corporation was named by MaYun.Wanda Plaza was named after Wanda.2)be covered with+（雪（雪/草地草地/烟雾烟雾.）:被被.覆盖覆盖

13、,表状态表状态,表示具体的覆盖表示具体的覆盖.如被雪如被雪/草地草地/布布/被子被子/盖子盖子/罩罩子等东西盖住子等东西盖住.The ground is covered with water.2.be covered by/with3.倍数的表达法倍数的表达法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+倍数倍数+as+adj./adv.原级原级+as+BA+be

14、+倍数倍数+adj./adv.比较级比较级+than+B1）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.拓展拓展改写改写归纳归纳可以是百分数、分数等Exercise1 用适当用适当 的词填空。的词填空。1.The surface of the earth is covered_(by/with)75%water.2.The weather report says th

15、at 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.withtormtookafterwider Mars,the _（第四）（第四）planet of the solar system,goes around the sun at a _ distnsof about 228 mil

16、lion kilometers.Its _ daimit(r)is 53%as wide as that of the earth.It looks like a _ and _ball.Its very beautiful.But during _ and _,strong _(风暴）风暴）can cover the whole_of Mars.The gravity on the surface of it is about _ as_as it is on earth.The air has only_ oxygen.It takes a spaceship _ to reach Mar

17、s when they are closest to each other.fourthdistanceredorangespringsummerstormssurfacetwo-fifthsstrongdiameterIndividual work.0.13%eight monthsPost-reading Exercise2Work in groups and try to retell the text.Marsdiametergo aroundshapeclimategravitytemperaturetake a spaceshipfourth,be named after53%as

18、 wide asat a distance of 228 million kmsbetween minus 138 degrees celsius and 28 degrees celsiusair0.13%oxygen ballbe covered by stormstwo-fifthseight monthsPost-reading Exercise3concluding1.We know more about Mars in his lesson.I hope you will have interest in space science especially in exploring

19、Mars.Some day some of you can land on Mars.2.We can use mind map to learn or go over our lesson,It will give you clear mind.SummaryWords and phrases:solar systemRomanGod of warbe named afterdiametergravityGrammar:倍数倍数+as+adj./adv.+as百分数百分数Sentences:Its diameter is 53%as wide as that of the earth.It takes/took+sb.+一段时间一段时间+to do sth.Homework1.Complete the Exs in the workbook.2.Try to retell the text following the mind map.3.Complete the Part2 and 3 in the book.Good bye!