Module 3 Unit 2 We have not found life on any other planets yet 课件-2023-2024学年外研版英语八年级下册

Module 3 Unit 2 We have not found life on any other planets yet. 当我们谈论宇宙时，我们指的是地球、太阳、月亮、星星以及它们之间的空间。许多星星看起来很小，因为它们离得很远。事实上，它们中的一些甚至比我们的太阳还要大。 太空广袤而迷人。太空包含各种物质和各种能源。位于太空的恒星和行星之间的地区，没有分子振动，所以那里没有声音。 太空是美丽的。行星、恒星、星系和其他东西形成了许多美丽而多彩的形状。我们可以用望远镜看到它们。 太空可能很危险。在太空深处，如果没有防护装备，人们将无法生存。地球穿越太空时，大气层保证我们的安全。大气层就像一条舒适的毯子，可以抵御寒冷和其他危险。 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亿万年的历史了。(→教材P20) hundreds of millions of 意为“数以亿万计的”。 ( ) Four ________ people were killed and ________ of people got hurt in the war (战争). A. hundreds; thousand B. hundred; thousand C. hundred; thousands C None of them has an environment like that of the earth，so scientists do not think they will find life on them.它们(行星)之中没有一颗行星拥有与地球一样的环境，所以科学家们认为他们在其他行星上不可能发现生命。(→教材P20) none指三者或三者以上中“没有一个”，表示全部否定，可指人也可指物。 ( ) He couldn't buy anything that day because ________ of the shops was open. A. all B. none C. no one B However，no spaceship has travelled far enough to reach other stars in our Galaxy.然而，还没有任何航天器能够远航抵达银河系的其他恒星。(→教材P20) enough修饰形容词或副词时要位于所修饰的词之后，常用结构为：adj./adv.＋enough＋to do sth.意为“足够……能做某事”。 ( ) (1) —Am I allowed to choose my favourite colour? —Sure. You are old ________ to make your own choice. A. too B. enough C. so (2) 他跑得足够快，赶上了校车。 He ran ______ ________ ____ _______ the school bus. ＝He ran ____ fast ______ he caught the school bus. B fast enough to catch so that 1.阅读课本 Activity 2，选出最佳选项 ( ) 1. How long has life been on the earth? A. For hundreds of years. B. For thousands of years. C. For millions of years. D. For hundreds of millions of years. D ( ) 2. How many planets go around the sun? A. Seven. B. Eight. C. Nine. D. Ten. B ( ) 3. According to the passage，which of the following is TRUE? A. planet > star > solar system > galaxy > universe B. planet < star < solar system < galaxy < universe C. planet > star > galaxy > solar system > universe D. star < planet <