Unit4 Topic2 SectionC （趣味课堂课件）英语仁爱科普版九年级上册

nullnullnullnullnullnullnullnullnullnullnullnullnullnullnull Unit 4 Amazing Science Section C Topic 2 I’m excited about the things that will be discovered in the future. 1 I、Master the new words and phrases： storm, weigh, journey, storm, weigh, limit, name after, as …as, at a distance of, search for... II、Be able to talk about something more about Mars. III、Be able to write back an e-mail. Learning aims Review ( ) 1. —Have you ever _____ to Tibet? —Yes, I have. And the scenery there made me very _____. A. been; exciting B. gone; excited C. been; excited D. gone; exciting C B ( ) 2. —Look, what a nice garden! —Yes. It _____ every day. A. has been cleaned B. is cleaned C. is being cleaned D. was cleaned Review ( ) 3. A bridge will _____ across the river next year. A. be built B. built C. is built D. build A B ( ) 4. To make our city more beautiful, rubbish _____ into the river. A. needn’t be thrown B. mustn’t be thrown C. can’t throw D. may not throw Pre-reading What do you know about Mars? What does it look like? A ball. What color is it? Red and orange. Mars is the fourth planet from the sun in our solar system. /'səʊlə sɪstəm/ 太阳系 It is named after Mars, the Roman god of war. be named after 以......命名 /'rəʊmən/ adj. 古罗马的 /ɡɒd/ n. 上帝;神 tell v. 辨别 You can tell which planet is Mars because it is bright red in the night sky. Can we reach the Mars now? Is the earth far from Mars? 1964年11月，美国向火星发射“水手4号”(mariner 4)飞船。1965年7月15日，美国的“水手4号”飞船接近火星，从距离火星1万公里处拍摄了21幅照片. 1971年11月，美国发射的“水手9号”(mariner 9)飞船进入火星轨道，成为火星的第一颗人造卫星 。 1975年，美国向火星发射“海盗1号”、“海盗2号”宇宙飞船。 1976年7月和8月，美国“海盗1号”(viking 1)、“海盗2号”(viking 2)飞船的着陆器分别在火星成功着陆。 While-reading 1a _____ 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. Read and understand. Look at the pictures and predict which statements are true about Mars. Then read the passage quickly and check the answers. T F F F Scan 1a and find out the number in the text. 53% as wide as 228 million kilometers about two-fifths as strong as 90 kilos / 36 kilos －138℃——28℃ 0.13% between minus one hundred and thirty-eight degree centigrade and twenty-eight degree centigrade zero point one three percent diameter distance gravity weigh temperature oxygen Fast reading /daɪ'æmɪtə(r)/ n.直径 /'ɡrævəti/ n.重力;引力 /weɪ/ v.重,有....重 Read 1a again and write down the information about Mars. Diameter Color Shape Climate Gravity Distance from the sun 53% as wide as that of the earth red and orange a ball during spring and summer: strong storms temperature: between-138℃ and 28℃ about two-fifths as strong as it is on earth about 228 million kilometers 1b Careful reading Paragraph 1 What do you know about Mars? What does it look like? know about 了解 look like 看起来像 look the same 看起来一样 Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war. Careful reading Paragraph 2 太阳系 be named after “以......命名”，是被动语态 罗马战神 Its diameter is 53% as wide as that of the earth. Careful reading Paragraph 2 Mars goes around the sun at a distance of about 228 million kilometers. 直径 as+adj./adv.+as 和...一样... 围绕太阳转 以......的距离 Mars is much smaller than the earth. Careful reading Paragraph 2 tell 辨别 You can tell which planet is Mars because it is bright red in the night sky. It looks like a red and orange ball. It’s very beautiful. Careful reading Paragraph 2 But during spring and summer, the surface of Mars is covered by strong storms. be covered with 被......覆盖 storm /stɔːm/ n. 风暴，暴风雨 Careful reading Paragraph 2 The gravity on the surface of Mars is about two-fifths as strong as it is on earth. gravity /'grævəti/ n. 重力，引力 two-fifths = two fifths 五分之二 （分子基数词，分母序数词，分子大于1时，分母加s） 分数/百分数/倍数 + as...as （as...as中间的adj./adv.用原级） “......是......的几分之几/百分之几/几倍” eg. The population of this city is twice as large as that of that city. 练习：1. _____ the students in our class have been to Beijing. A. Two-thirds B. Second-third C. Two-three D. Two-threes 2. Our classroom is twice as _____ as theirs. A. larger B. largest C. more large D. large A D Careful reading Paragraph 2 So a person (who weighs 90 kilos on earth) weighs only 36 kilos on Mars. 定语从句 weigh /weɪ/ v. 重，有……重 Careful reading Paragraph 2 The temperature on Mars is between -138 ℃ and 28 ℃ . The air has only 0.13% oxygen. minus/negative one hundred and thirty-eight degree Celsius /'selsiəs/. I can’t breathe. Careful reading Paragraph 3 It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. Scientists are still searching for more information about Mars. It takes sb. some time to do sth. “花某人多少时间做某事” eg. It takes me an hour to finish my homework every day. 练习： It takes a spaceship about eight months _________ (reach) Mars from the earth. to reach be close/next to 离......近 链接：be far from 离......远 search for 寻找 “到达”：reach + 地点 = get to + 地点 = arrive in + 大地点/arrive at + 小地点 Watch and follow Post-reading Discuss the crazy questions with your partner and state your reasons. 1c 1. Does Mars have a good climate for plants? 2. Is Mars a useful place to dry fruit? 3. Is Mars a good place for human beings to live? 4. Is Mars a comfortable place for heavy people? Hi Kangkang, It has been two days_________(since, from) we landed on Mars. It _________(cost, took) us more than two years to_________ (leave, get) here. Generally, the journey went well, but the living conditions were_______(quiet, quite) bad during the journey. We had to produce most of the food in the spaceship. ______________(What’s more, What’s worse), our water supplies were very low. We had to limit the use of water during _________(those, these) days. So we had a shower every six weeks. We will spend another seven hundred and sixty-three days on Mars. __________( How, What )a long time! I often miss the family, but the excitement of being on Mars is worth it! Wish me luck! Yours, Uncle Stephen since took get quite What’s worse those What Kangkang’s uncle sent an e-mail to him from Mars. Choose the right words to complete the letter. 2 be worth doing sth. 值得做某事 Read 2 again and answer the questions. (1) Who is this e-mail from and to? (2) How long did it take them to get there? (3) Did everything go well during the journey? It is from Uncle Stephen to Kangkang. More than two years. No, it didn’t. clothing food and drinks weather transportation … Write back an e-mail to Uncle Stephen for Kangkang and ask him for more information about Mars. The list may help you. 3a Work in pairs. Check your partner’s e-mail and use your knowledge of Mars to answer the questions for Uncle Stephen. 3b Dear Uncle, I’m very glad to receive your e-mail, and I know that the living conditions were quite bad during your journey. I am interested in the information about Mars. Can you tell me more about it ? How about the weather on Mars? Is it very cold? What kind of transportation do you use there? I am looking forward to your e-mail! Good luck! Yours, Kangkang You can write it like this : An example 1. It has been two days since we landed on Mars. 自从我们在火星上着陆已经有两天了。 考点： It is + 时间段 + since + 过去时从句 = It has been + 时间段 + since + 过去时从句 = have/has + 延续性动词或状态短语+since+过去时/for +一段时间 eg. It has been two days since we landed on Mars. = It is two days since we landed on Mars. = We have been on Mars since two days ago. = We have been on Mars for two days. Language points 闯关练习：写出下面句子的同义句。 1. It is 5 days since I borrowed the book from the library. = It _____ _____ 5 days _____ I borrowed the book from the library. = I _____ _____ the book from the library _____ 5 days ago. = I _____ _____ the book from the library _____ 5 days. 2. The baby fell asleep 10 minutes ago. = _____ _____ 10 minutes _____ the baby fell asleep. = It _____ _____ 10 minutes since the baby fell asleep. = The baby _____ _____ _____ for 10 minutes. = The baby has _____ _____ _____ 10 minutes ago. has been since have kept since have kept for It is since has been has been asleep been asleep since Language points Exercises I. 根据语境，用方框中所给词的适当形式填空。 1. When the __________ stopped, the plane could take off. 2. There are too many books in your bag. It __________ too much. 3. The __________ went well, but the living conditions were very bad. 4. The __________ in the space station is about 90% of that on the Earth. 5. Scientists __________ agree that earth's climate will warm up in the future. storm general, gravity, storm, weigh, journey weighs journey gravity generally II. 完成译句。 1. 我忙着寻找一些信息。 I'm busy ________ _______ some information. 2. 地球表面的大部分被水覆盖着。 Most of the earth's surface is ________ _______ water. 3. 你应该尽可能张大嘴。 You should open your mouth _____ _______ _____ you can. 4. 昨天老师告诉我们地球绕着太阳转。 Yesterday the teacher told us the earth ________ _______ the sun. 5. 虽然人类已经登上月球，但我们对月球仍然知之甚少。 We still know little about the Moon though men ________ _______ on it. Exercises searching for covered by as wide as goes around have landed Summary We learn: 1. Some words: storm, weigh, journey... 2. Some phrases: name after, as …as, at a distance of, search for 3. Some sentences: (1) Its diameter is 53% as wide as that of the earth. (2) It has been two days since we landed on Mars. We can: 1. Talk about something more about Mars. 2. Write back an e-mail. Homework Read 1a. Memorize the useful expressions and key sentences which we learn today. Finish Section C in your workbook. Preview Section D. Thank you! 2024 Blues 1320.0 2024 Blues 696.0 2024 Blues 864.0 2024 Blues 960.0 2024 Blues 816.0 2024 Blues 912.0 2024 Blues 4560.0 2024 Blues 8904.0 2024 Blues 13176.0 2024 Blues 11136.0 2024 Blues 6792.0 2024 Blues 936.0 2024 Blues 6888.0 2024 Blues 7440.0 2024 Blues 13920.0 2024 Blues 13800.0 $nullnullnullnullnullnullnull