初中英语外研版 (新标准)八年级下册Unit 2 We have not found life on any other planets yet课文配套ppt课件

这是一份初中英语外研版 (新标准)八年级下册Unit 2 We have not found life on any other planets yet课文配套ppt课件，文件包含Unit2Wehavenotfoundlifeonanyotherplanetsyet课件pptx、Unit2Wehavenotfoundlifeonanyotherplanetsyet音频new_jh4_m3u2a2mp3等2份课件配套教学资源，其中PPT共22页， 欢迎下载使用。
Enjy a news reprt.
Lk at the pictures and talk abut smething abut Shenzhu-9.
Wrk in pairs. Lk at the picture and talk abut what yu knw abut Chinese spaceships.
Shenzhu-9 is a manned spaceship.
Wrk in grups f fur and discuss tw questins.
1. Have we fund life n ther seven planets yet? If nt, why?2. What d yu knw abut UFO? D yu believe there are creatures frm uter space? Why r why nt?
Pre-reading
Read the passage and chse the best title fr it.
Fast reading
1. Anyne ut there?2. Life n the earth3. The sun and ther stars4. The stars at night
Careful reading
Read the first three paragraphs and answer questins.
1. What is the earth like?2. What is slar system?3. What have scientists discvered in the universe?
The earth is a planet and it ges arund the sun.
The sun and its planets are called the slar system.
Scientists have discvered many ther galaxies in the universe.
Read again and draw a map f the Galaxy. Then retell the first three paragraphs accrding t yur picture.
Read Paragraph 4 and answer the questin.
What is the functin f this paragraph?
This paragraph links the preceding with the fllwing. (承上启下)
Language pints
1. Scientists think that there has been life n the earth fr hundreds f millins f years. 科学家认为地球上的生命已经有亿万年了。 millins f 数百万, hundreds f 数百, thusands f 成千上万, billins f 数十亿 e.g. There are billins f stars in the Galaxy, and ur sun is nly ne f them. 银河系中有数十亿颗恒星，我们的太阳只是其中的一个。2. Hwever, we have nt fund life n any ther planets yet. 然而，我们还没有在 任何其他行星上发现生命。 yet用于否定句和疑问句，意思是“还；尚”。的意思是“还没；尚未”， 表示某事物在某一时间尚未发生，但未来也许会发生。例如: I haven’t learnt any further infrmatin yet. 我还没有得到进一步的信息。 Have yu received her letter yet? 你收到她的来信了吗?
3. Nne f them has an envirnment like that f the earth, s scientists d nt think they will find life n them. 它们中没有一个有像地球这样的环境，因此科学家 认为在它们上面找不到生命。 nne f...表示(三个以上)一个也没有。作主语时，谓语动词可用单数也可以用 复数。如： Nne f us has/have been t the Mars. 我们中没一个去过火星。4. S hw large is the universe? It is impssible t imagine. 所以宇宙有多大?我们 无从想象。 句型: It is+形容词+t+动词原形，意思是“做某事很……”。 It is difficult t read these wrds. 读这些单词很难。
5. s many stars in the universe, are we alne, r is there life ut there in space? ……宇宙中有这么多恒星，我们是孤独的吗？或太空中还有其他生命存 在吗? with+名词+介词短语，表示伴随情况，意思是“带着……”。例如: Mr. Zhang is cming with a bk in his hands. 张老师手里带着一本书进来了。 alne在句中作形容词，不作定语只作表语，也可作副词，意思是“独自地”。 例如: She was alne in that dark rm. 她独自一人呆在那间黑屋子里。
The third reading
Check (√) the true sentences.
1. The earth is a star.2. The sun is a star.3. There is mre than ne galaxy in the universe.4. The light frm the stars in ther galaxies has travelled fr a lng time t reach us.5. Scientists have received many messages frm space.6. Spaceships have visited mst f the universe.
Cmplete the passage with the wrds and expressin in the bx.
Is there life n ther planets? There are seven ther planets in ur (1)__________ _________, but (2)________ f them has a(n) (3)____________ like that f the earth. Spaceships frm the earth have dne surveys f the ther planets, but they have nt fund any life there. Why has n ne frm ther planets tried t (4)______________ with us? It is true that scientists have nt discvered life n ther planets in the (5)__________ yet, but sme scientists believe that they will find it sme day.
Discussing and reprting
Because f the pllutin, the envirnment n the earth is becming wrse and wrse. If ne day, humans can’t live n the earth any mre, they have t find “a secnd earth” in space fr them t live n, what kind f planet is suitable?
Discuss the fllwing in grups f fur and make a reprt.
cmmunicatin
have just landed　
fund many ther　
ever been t
heard this latest news
Lk at the picture frm a science stry fr children and answer the questins.
What have the scientists just received? (a message frm ne f ur spaceships)They have just received a message frm ne f ur spaceships.1. Where has the spaceship landed? (Mars)2. What has the spaceship discvered? (peple n Mars)3. Why have the peple n Mars nt sent us a message? (d nt knw hw t)4. Why have the peple n Mars nt visited us n the earth? (d nt knw hw t)
Write a passage t describe the picture.Use yur answers t the questins in Activity 5 t help yu.
We have just received a message frm ur spaceship t Mars...
Summing up
Summing up & Hmewrk
1. Wrds and phrase: nne, envirnment, that, slar, system, slar system, grup, galaxy, universe, light, impssible, take—tk—taken, ut, cmmunicate2. Sentences: (1)Scientists think that there has been life n the earth fr hundreds f millins f years. (2)Hwever,we have nt fund life n any ther planets yet. (3)The earth is a planet and it ges arund the sun. (4)They are very far away and their light has t travel fr many years t reach us. (5)With s many stars in the universe, are we alne, r is there life ut there in space?
Make a news reprt accrding t the passage. Yu can use the PPT t help yu.