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教课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教课ppt课件，共24页。PPT课件主要包含了 the sun，天王星，海王星，galaxy ，stars， gas， dust，Summary，planets，Galaxy等内容，欢迎下载使用。
What is the slar system?
the slar system
its planets
A galaxy is a huge cllectin f gas, dust, and billins f stars and their slar system.
Galaxy = the Milky way
Hw can yu travel t space?
Match the main idea with each paragraph.
Paragraph 1Paragraph 2Paragraph 3Paragraph 4Paragraph 5
We haven’t fund life n any ther planet.
What’s in space?
Hw large is the universe?
What are scientists’ questins?
What have scientists dne?
What’s the best title f this passage?Anyne ut there?Life n the earthThe sun and ther starsThe stars at night
Read and answer the questins.
1. What des the earth g arund? The earth ges arund the sun. 2. Why dn’t scientists think they will find life n ther planets? Because nne f them has an envirnment like that f the earth. What have scientists sent t Mars? Scientists have sent spaceship t Mars.
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.
Scientists haven’t discvered life n seven ther _________.
Scientists dn’t think they will find life in the __________.
Scientists have discvered many _______________.Hwever, they are t ___________t reach.
Is there _______ut there in space?
ther galaxies
Is there life ut there in space? Why?If there is life in space, what will happen?
slar system
1.在地球上2. 数亿年3. 在其它星球上4. 围绕太阳转5. 太阳系6. …一部分7. 在宇宙中8. 难以想象9. 在太阳系外旅行10.到达其它恒星11. 与…交流
1. n the earth2. hundreds f millins f years3. n any ther planets4. g arund the sun 5. the slar system6. a part f 7. in the universe8. be impssible t imagine9. travel utside the slar system10. reach ther stars11. cmmunicate with
Scientists think that there has been life n the earth fr hundreds f millins f years. here has been（there be 的现在完成时结构） been be 的过去分词 there has/have been + 名词 a. There __________ milk in the fridge. b. There __________ a lt f peple in the park.
nne f + 复数可数 名词/ 代词，作主语时，谓语动词既可以是单数也可以是复数。Nne f 表示都不（3者或3者以上）nne f + 不可数名词，做主语时，谓语动词用单数
2. Nne f them has an envirnment like that f the earth.
Nne f the children ______________ (speak) English.2. Nne f cheese _______ (be) n the tp f the pizza.
speaks/speak
3. Our slar system is a small part f a much larger grup f stars and planets, called the Galaxy r the Milk Way.
be called 表示被动, be +过去分词第二个只用called, 因为已有谓语动词isThis by __________ Tm.(call)I knw a by _______Tm.(call)
4. They have sent spaceships t the planet Mars t take phts.
send sth/sb t d sth 派遣某人做某事send sb n a run 让某人去跑腿
I___________________. 我让他去买啤酒。adj/adv +enugh 足够……He is ________t slve this prblem.A. enugh clever B. clever enugh
sent him t buy beer.
5. Hwever, n spaceship has travelled far enugh t reach ther stars in ur Galaxy.
reach v. 到达 reach sp= arrive at/in sp = get t spreach 表示到达某个地方需要费力气It takes a lt f time t ________ this place.reach B. get C. arrive
6. Scientists have als discvered many ther galaxies in the universe.
discver v. 发现 discvery n. 发现 invent v. 发明，指发明、创造出新的东西
1. Bell __________ the telephne.2. Newtn ____________ the law f gravity.(万有引力定律)
There ________ life n the earth fr hundreds f millins f years. have been B. has been C. have D. has2.He prmised t pick me up at the schl gate. Hwever, he ________yet. A. didn’t arrive B. desn’t arriveC. isn’t arriving D. hasn’t arrived
3. —Why has n ne cmmunicated________ us? —We dn’t knw the answers yet.  A.with　B.t　C.fr　D.at4. _________Chinese are lking fr ways t learn English well.  A. Thusand　 B. Thusands C. Thusand f　D. Thusands f