外研版八年级下册英语M3U2课件

1、1,2,Scientists,have sent,spaceship to Mars.,The journey,has taken,several months.,3,4,Read the passage and choose,the best title for it.,1. Anyone out there?,2. Life on the earth,3. The sun and other stars,4. The stars at night,5,1. The earth is a star.,2. The sun is a star.,3. There is more than on

2、e galaxy,in the universe.,Check () the true sentences.,6,4. 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.,7,1. Scientists,think,that there has been,life on E

3、arth for millions of years.,宾语从句,there has been: there be,的完成时,科学家们认为，,地球上,已有,生命,数百万年,了。,Read Para 1 and find out this sentence.,They think _ (,曾有过,),life on the moon.,用,现在完成时,there be,has ever,been,8,Read Para 2 and answer questions:,1. What does the Earth go around?,2. How many planets go around t

4、he,sun?,3. What is the solar system?,It goes around the sun.,Eight planets .,The sun and its planets are called,the solar system.,围着,转,9,2. None of,them has an environment,with,air. (L3-4),none :,一个,（人,物）,也没有,用来回答,how many,的提问,（,no one,用来回答,who,的提问）,none of,+ n.,复,（谓语动词单复均可）,with :,有,他们中没有一个,有,空气的环境

5、。,10,How many people are there in the,classroom?,_.,A. No one B. None C. Nothing,这些宇航员没人去过火星。,_ the astronauts,_ Mars.,这里曾经有个带花园的房子。,_ some houses _,gardens.,None of,have / has been to,There have been with,11,3. The sun and its planets are called,the solar system. (L5-6),be call,ed,:,被叫做,（被动语态）,那个演唱

6、组合叫,S.H.E.,。,The pop group _S.H.E.,is called,12,Read Para 3 fill in the blanks:,The stars we see _ are,the suns in other solar system.,There are _ 200 billon,stars in our galaxy, called the,_, and our sun is only,_.,at night,more than,Milky Way,one of them,13,4. The stars,we see at night,are the sun

7、s,in other solar systems. (L1-2),定语从句,：,用来解释前面的名词。,的,+,前面的名词,我们晚上看到的,星星是其他星系的恒星。,The boy,who is talking to the teacher,comes,from England.,正在和老师谈话的,男生来自英国。,14,Read Para 4 answer questions:,1.,What have scientists discovered?,2. Why is it hard to know how,large the universe is?,Theyve discovered many

8、 other,galaxies.,Because they are very far away.,15,5. their light has travelled for,many years to,reach,us.,他们的光线需要好几年才能到达地球。,到达某地,arrive,in,+,大地方,at,+,小地方,get to +,地方,reach +,地方,【温故知新】,后面没有地点只用,arrive,16,He will call you as soon as he,_Foshan.,A. arrive in B. gets C. reaches,Who can tell me when h

9、e _?,A. reached B. got to C. arrived,The light is too high. I cant _it.,A.reach B. arrive C.get,17,6. Its hard to understand how large,the universe is.,( ),It,s hard for the students,_ the,English well.,A. learn,B. to learn,C. learning,It is +,形,+ (for sb.) to do,B,很难明白宇宙有多大。,18,Read Para 5,、,6 and

10、answer questions:,Has anyone discovered life in space ?,No one has discovered any life in space yet.,(P5,L4),19,7. With so many stars in the universe,are,we,alone, or is there life out there,in space?(P6,L3),be alone:,孤单的，孤独的,行为动词,+alone,孤单地,，,独自,loney,寂寞的,孤单的,feel lonely,感到孤单的,宇宙中有这么多的星体，我们是,单独的,吗？

11、,太空中还有其他生命吗？,20,用,lonely,，,alone,填空,The old man,lives,_ but he,never,feels,_. Because he has,many friends there.,Dont,leave,your child _ at,home.,alone,lonely,alone,21,Complete the passage with the,words and expression in the box.,communicate environment none,solar system universe,Is there life on other planets? There,are seven other planets in our (1),_, but (2) _ of them,has a(n) (3) _ like that of,the earth.,solar system,none,environment,22,Spaceships from the earth have done,surveys of the other planets, but they,have not found any life there. Why has,no one from other planets tried to