Module 3 Unit 2 We have not found life on any other planets yet.第三课时-外研版八年级英语下册课件 (2份打包)

Module 3 Journey to space 外研版 八年级下册 Unit 2 We have not found life on any other planets yet. 第三课时 学习目标 1.熟记重点单词：none, environment, solar, system, group, galaxy, universe, light, impossible, out, communicate 2.掌握重点短语:hundreds of millions of… solar system, in the universe, far enough, in space, go around the sun, be called, have to, communicate with 3.掌握重点句型：(现在完成时) 主语+have/has+动词的过去分词 Do you know the words and expressions in the box? Put them in order: small — large. galaxy planet solar system star universe planet— star —solar system — galaxy— universe 导入一 * A. galaxy B. planet C. solar system D. star E. universe Match the words with the pictures. A B C D E B 1 Work in pairs. Look at the picture and talk about Chinese spaceships. Shenzhou-9 is a manned spaceship 1. Anyone out there? 2. Life on Earth 3. The sun and other stars 4. The stars at night 2 Read the passage and choose the best title for it. go around the sun 绕太阳转 be called 被叫作… solar system 太阳系 have to 不得不 communicate with … 与…交流,与…联系 far enough 足够远 in the universe 在宇宙中 in space 在太空中 Scientists think that there has been life on the earth for hundreds of millions of years. 科学家们认为地球上的生命已经有上亿年的历史。 there be 的现在完成时“there have/has been+名词” There has been a picture on the wall for a long time. There have been some old trees in our school. eg:很长时间以来在墙壁上已经有这幅画了。 在我们学校已经有一些古树了。 hundred前加基数词，表示“一百、二百、三百……”，hundred要用单数形式；hundred与of连用表示“数百”时，hundred要用复数形式，即hundreds of。 例如： There are eight hundred students in our school. thousand, million, billion和hundred的用法相同。 There are hundreds of people in the park. We planted _____ trees last year. A. hundreds of B. hundred of C. five hundreds D. five hundred of Practise With so many stars in the universe, are we alone, or is there life out there in space? 宇宙中有这么多星球，我们是孤独的吗？抑或太空中还有其他生命存在呢？ 这里with so many stars in the universe是介词短语，在句中作状语。类似的例子还有： 那个女士站在那里，手插在口袋里。 The woman stood there with her hands in th