1、現(xiàn)在完成時的用法（1）定義：用于表示以前的某個時間曾經做過的、發(fā)生的事情，這種行為對目前有某種影響。結構：have/has +動詞的過去分詞1.They _ _(go) to Shanghai on business.2.I _ _(make) this model of the space station.3._it_(arrive) yet ?練一練Unit 2 We havent found life on other planets yet.Warming up: 學習新單詞，了解我們所生存的宇宙空間。通過圖片介紹，我們可以更多的了解宇宙知識。 Drilling: 明確學習任務。通過閱

2、讀訓練，使得我們能夠讀懂關于宇宙的科普文章，了解我們所生存的環(huán)境。Assignments: 將課堂上的聽說練習落實在筆頭上，進一步落實現(xiàn)在完成時的用法。目標與任務Words and expressionsP183Activity 1.Look at the pictures and think about things you know about life on other planets.universe 宇宙planet 行星galaxy 星系Activity 1.Look at the pictures and think about things you know about lif

3、e on other planets.Solar system 太陽系star 恒星moon 月球Match the words with the picturesgalaxyplanetsolar systemstaruniverse太陽 put the words in the box in order: small-large galaxy planet solar system 星系 行星 太陽系star universe 恒星 宇宙 -universe 宇宙 planet行星-star恒星-solar system 太陽系-galaxy星系Listen,then read the p

4、assage Check the true sentences：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 found lif on other planets. ( )7.Theyve received many message

5、s from space. ( )8.Theyve visited most of the universe. ( ）1.on Earth 地球上2.millions of 幾百萬 hundred, thousand, million,billion等前有具體 數字用單數,不表示具體數字或后接of時要用復數 如:五百萬_,成百上千 hundreds of3.in space 在太空4.none of 中沒有一個, none of做主語時,謂語動詞既可用單數,也可用復數. 與不可數名詞連用時只能用單數. None of us have/ has been to Hongkong. None of

6、 the money is mine. 這些錢都不是我的.5. go around 繞著轉,around是介詞,”環(huán)繞” 如:The earth goes around the sun. 地球繞著太陽轉.6.The sun and its planets are called the solar system.are called 是由be 動詞+過去分詞構成的被動語態(tài),”被叫做”,“被稱為”, 如:The pop group is called S.H.E. 那個演唱組合叫S.H.E7. alone 孤單的,孤獨的 lonely 寂寞的,通常指人在心靈上的”寂寞和憂郁”, 帶強烈 的感情色彩

7、如：I was alone, but I didnt feel lonely. 我獨自一個人,但是我并不感到寂寞.8. prefer (preferred,preferred),表示”寧愿,更喜歡”.如: Which would you prefer, tea or coffee? 茶和咖啡,你更喜歡哪一種?Read the textLets practice.根據中文意思將下列句子譯成英文。數百萬年來，地球上就有生命了。我們還沒有在其他行星上發(fā)現(xiàn)生命。你讀過有關火星的書嗎？宇航員們在火星上發(fā)現(xiàn)生命了嗎？There _ _ life on Earth for millions of years.We_ _ life on other planets._ you _ books about Mar