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1、Unit 2We havent found life on We havent found life on other planets yet.other planets yet.planet solar systemalsononeenvironmentairgrow(grew,grown)n.行星行星 太阳系太阳系 adv.也也;同样同样 pron.没有一个没有一个 n.环境环境 n.空气空气 v.生长生长;种植种植Words and expressionsWords and expressionspartgalaxy billion universelightbeyondalone n.
2、部分部分 n.星系星系 num.十亿十亿 n.宇宙宇宙 n.光线；电灯光线；电灯 prep.在在之外之外 adj.孤单的，孤独的孤单的，孤独的Words and expressionsWords and expressionsNeil Armstrong is the first astronaut to walk on the moon.尼尔尼尔阿姆斯特朗阿姆斯特朗是第一位在月球漫是第一位在月球漫步的宇航员。步的宇航员。Who is he?He is Chinas first astronaut.Discussion1.How many planets are there in the un
3、iverse?2.Is there any life on other planets?DiscussionEarthMars No life lives on it.It doesnt have an environment with air.(no air)It is a planet.It has life(people,animals,plants and other things)on it.The life has been there for millions of year.It is a planet too.Earth sun planetsSolar systemgala
4、xyuniversePut the words and expressions in order:small-large galaxy planet solar system star universe planet starsolar systemgalaxyuniverse2A.galaxyB.planet C.solar systemD.star E.universe Match the words with the pictures.ABCDEBListen to the passage and choose the best title.1.Anyone out there?2.Li
5、fe on Earth3.Our solar system4.The stars at nightTell us which sentence is true and which is false.1.The Earth is a star.()2.The sun is a star.()3.There is more than one galaxy.()4.Our galaxy is part of the Milky Way.()5.The light from stars has taken a long time to reach us.()6.Scientists have foun
6、d life on other planets.()7.Theyve received many messages from space.()8.Theyve visited most of the universe.()F T T F T F F F 1.However,no one has discovered any life in space yet.然而然而,还没有人发现太空里的任何生命。还没有人发现太空里的任何生命。no one与与none的区别：的区别：(1)no one同义词为同义词为 nobody,只用于只用于指人指人，其后不跟其后不跟of短语，作主语时谓语用单数，短语，作主
7、语时谓语用单数，no one 只能回答以只能回答以who开头的问句开头的问句；(2)none用于表示对用于表示对三者或三者以上全部三者或三者以上全部否定的不定代词，既可指人，也可指物否定的不定代词，既可指人，也可指物。作主语时，谓语可以是单数，也可以是作主语时，谓语可以是单数，也可以是复数复数;none的的反义词是反义词是all,none可与可与of连连用用;可以用来可以用来回答回答How many 或或 How much开头的问句开头的问句。None of us are/is interested in the story.我们没有人对那个故事感兴趣。我们没有人对那个故事感兴趣。-Who a
8、re you speaking to?你在跟谁讲话？你在跟谁讲话？-No one.没人。没人。-How many students are there in the room?房间里有多少个学生房间里有多少个学生?-None.一个也没有。一个也没有。2.are we alone,？我们是唯一的吗？我们是唯一的吗？alone与与lonely的区别：的区别：(1)alone既可作形容词，又可作副词既可作形容词，又可作副词,意意为为“单独地，独自地单独地，独自地”，没有感情色，没有感情色彩彩。(2)lonely只作为形容词只作为形容词，意为意为“孤独的，孤独的，寂寞的寂寞的”，具有感情色彩。，具有感
9、情色彩。He was very lonely after his wife left.他妻子离开后，他很孤独。他妻子离开后，他很孤独。3.prefer life on Mars 更喜欢火星上的生活更喜欢火星上的生活prefer表示表示“更喜欢更喜欢”，相当于，相当于likebetter。(1)prefer to do“更喜欢做某事更喜欢做某事”；“宁愿做宁愿做”(2)preferto“比起比起更喜欢更喜欢”prefer.to后要后要跟跟名词名词、动名词动名词；I prefer reading books to watching TV.比起看电视我更喜欢读书。比起看电视我更喜欢读书。(3)pre
10、fer to dorather than do “宁愿宁愿而不愿而不愿”They prefer to buy a new car rather than repair it.他们宁愿去买一辆新车，也不愿去他们宁愿去买一辆新车，也不愿去修理。修理。ExerciseExerciseIndividual activity一、根据句意写单词。一、根据句意写单词。1.Everyone knows _ travels much faster than sound.2._ of us like this bad TV programme.3.The flowers will _ well if they g
11、et enough water.4.The solar system is a small part of our _.5.We havent _ life on other planets yet.lightNonegrowgalaxyfound5.Have they found any _(life)in space.6.I prefer _(stay)at home to going out on Sundays.7.It is hard _(understand)how large the univers is.8.The Sun and its planets _(call)the solar system9。_(science)have discovered many other galaxies in the universe.10.Have you tried _ (send)information to us?二、用所给词的正确形式填空二、用所给词的正确形式填空lifestayingto understandare calledScientiststo sendHomeworkGet more information about planets.