2015年外研版八年级英语下册module3Module+3+Unit+2We+have+not+found+life+on+any+other+planets+yet（共25张PPT）.ppt

1、Module 3,Journey to space,Module 3,Unit 2,We have not found life on any other planets yet.,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

2、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,Match the words with the pictures.,A. galaxy B. planet C.

3、 solar system D. star E. universe,A,B,C,D,E,B,Skimming(略读) to get general idea,1. Anyone out there? 2. Life on Earth 3. The sun and other stars 4. The stars at night,Read the passage and choose the best title for it.,Scanning（跳读） to get detailed information,Check() the true sentences. 1. The earth i

4、s a star. 2. The sun is a star. 3. There is more than one galaxy in the universe. 4. The light from the stars in other galaxies has travelled for a long time to reach us. 5. Scientists have received many messages from space. 6. Spaceships have visited most of the universe.,Careful reading （精读）to sol

5、ve difficult points,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,Language points,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

6、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：,thousand, million, billion和hundred的用法相同。,T

7、here are eight hundred students in our school.,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

8、太空中还有其他生命存在呢？ 要做的事情这么多，我们都没时间玩了。,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：,With so many things to do, we have no time to play.,那个女士站在那里，手插在口袋里。,Practise, Why do you always sleep _? Because Im afraid of the dark. A. by yourself B. with the door open C. with the window open D. with the

9、 light on,The woman stood there with her hands in the pockets.,alone: 独自，单独一人（没有感情色彩) lonely :孤单的，孤独的（指情感上的孤独）,她独自一人回家,She went home alone.,有时，我会感到孤独。,Sometimes, I feel lonely.,practice,He lives _, but he never feels_. A. lonely; alone B. lonely; lonely C. alone; lonely D. alone; alone,3. Why has no

10、 one communicated with us? 为什么没有人和我们联系呢？ We rang several times, but no one answered. 我们按了几次铃，但没有人来开门。,no one表示“没有人”，作主语时，谓语动词常用单数形式。如：,none 指三个或三个以上的人或物中“没有一个”，其后常接“of + 名词 / 代词”，后面动词单复数形式均可。,None of us has / have been to Sanya. 我们都没去过三亚。, Im hungry. Is there any bread in the fridge? _, but we have

11、cakes. Would you like to have one? A. Some B. Much C. None D. Nothing,Practise,none, environment， solar, system group, galaxy universe, light impossible, out communicate,本课时主要单词,hundreds of millions of in the universe far enough in space go around the sun be called have to communicate with,本课时主要短语,1. However, we have not found life on any other planets yet. 2. None of them has an environment like that of the earth. 3. Scientists have also discovered many other galaxies in the universe. 4. We do not kno