1、Unit 4 Amazing Science,Welcome to the unit,Topic 3,I dont think aliens can be found in space. Section D,New words,universe 宇宙 beyond 超出之外 separate 单独，分开 hand in 上交，交纳,Teaching aims and demands,1. Learn the new words and useful phrase: beyond, separate, hand in 2. Review the use of “modal verb + be +
2、 p.p.”. 3. Talk about our planet and living things on other planets.,The earth is a planet.,The sun is a star.,The earth is a planet and goes around the sun.,There are eight planets that also go around the sun.,The sun and its planets are called solar system.,The solar system is a small part of the
3、universe.,Do you know other eight planets?,Mercury (水星),Venus （金星）,Jupiter （木星）,earth,Mars,Saturn （土星）,Neptune （海王星）,Uranus （天王星）,The distance from the sun,Maybe there are aliens living on another star or planet. Would you like to make friends with them? Please introduce the earth to them. Discuss i
4、n groups and then give a report to the class,Group work,Explanation,1. Scientists think that there has been life on the earth for millions of years. 科学家们认为地球上生物的存在已有数百万年了。there be 的现在完成时是there have/ has been. 如：There have been a few great changes since you left.自从你走后发生了几项重大的变化。There has been a lot o
5、f rain lately. 最近下了很多雨。2. The sun and its planets are called the solar system. 太阳和它的行星成为太阳系。solar adj. 太阳能动力，solar cell 太阳能电池。,3. Scientists have launched many spaceships to explore other planets in the solar system. Some spaceships have gone beyond the solar system. 科学家们发送了许多宇宙飞船去探索太阳系的其他星球，有的飞船已去了
6、太阳系以外的地方。,beyond在这里是介词，意为“（表示位置）在或向的那边，远于，超出之外”。如：The village is beyond that mountain. 那个村子在山的那边。 拓展beyond还可表示时间“迟于”；“（范围，限度）超出”。如：The disco went on until beyond midnight. 舞会延续到午夜以后。The exercise was beyond the abilities of most of the classes.这个练习题超出了班上大多数学生的能力。,4. With so many stars in space, are w
7、e alone, or is there life on other planets in space? 太空中有这么多星星作伴，我们会孤单吗？或者说太空中其他的星球上还有生命吗？,（1）with引导的介词短语作伴随状语。 如：With these words, the tiger jumped into the river.说完这些话，老虎跳进了河里。（2）alone这里是形容词“孤单的，独自的”，无感情色彩，在句子中可充当表语，但不可作定语。 如：Ha was alone at home. 他一个人在屋里。链接alone作副词是“独自，单独”之意，也有“仅仅，只有”之意（用于名词或代词后）
8、。如：,He came alone.他一个人来的。You cant live on bread alone. 你不能仅仅靠面包生活。比较lonely孤独的，孤寂的，寂寞的，含有感情色彩，在句子中可充当表语和定语。 如：Although he lives alone, he doesnt feel lonely.虽然他在独居，但他并不感到孤独。On the lonely island, there is a small house. 在那个孤岛上有一个小房子。,师生互动,S：老师，我有一个关于词语方面的问题，在这个话题里多次出现trip，travel, journey。我又想到了tour一词，请
9、问它们有何区别？T：老师在上学时也曾问过同样的问题。这些词都可表示“旅行”，但用法不同。（1）trip指任何形式或一定目的的短期旅行，有时可与journey互换。 如：We see a bright future for our country from Fei Junlong and Nie Haisengs space trip.从费俊龙和聂海胜的太空旅行中，我们看到了祖国光明的未来。,Yes, thats a fantastic trip. 是的，那是一次精彩的旅行。（2）journey可指陆路、海路和空路的旅行，但一般指有预定地点的较长距离旅行。 如：If you are going
10、on a long car journey, make sure the vehicle is in good condition.要是你打算开车进行长途旅行，一定要确保车辆运转状况良好。 （3）travel最为普通，除表示旅行以外，还可指人、动物等被转送。如：He has traveled to Paris. 他去过巴黎旅行。 Mars travels around the sun.火星围绕太阳运转。,（4）tour指“周游，是根据一定的路线及事先预定的地点，最后回到原出发点的活动。 如：We spent four weeks touring around Europe.我们花了四个星期周游欧洲。另外由travel和tour分别派生的两个词traveler和tourist作“旅客，游客”讲。,Suppose you live on another star or planet. Write a passage about your life on it. The words on the left may help you. Mars. Talk about your life on Mars,Clothing Food and drink Weather Transportation .,Homework,
