初中Unit 2 We have not found life on any other planets yet课堂教学课件ppt
展开Unit 2 We have nt fund lifen any ther planets yet.
Mdule 3 Jurney t space
Learning aims(学习目标)1.T learn new wrds and expressins abut jurney t space.2. T be able t understand passages n space travel and identify specific be able t summarize a be able t describe a picture using the present learn the difficult and key structures and phrases.
1.[nʌn] 2[ɪn'vaɪrənmənt] 3. [ðæt] 4. ['səʊlə(r)] 5. ['sɪstəm] 6. [ɡru:p] 7. ['ɡæləksɪ] 8. [ˈju:nɪvɜ:s] 9. [laɪt] 10. [ɪmˈpɒsəbl] 11. [aʊt] 12. [kə'mju:nɪkeɪt] 星系,太阳系
nneenvirnmentthatslarsystemgrupgalaxyuniverselightimpssibleutCmmunicateslar system
prn.没有一人/一个n.环境prn.那,那个adj.太阳的n.系统,体系n.群,组n.星系n.宇宙n.光/光线/光亮 adj.不可能的adv.在远方v.联系,交流
New wrds and expressins
wrds cmpetitin
Let’s cmpare Wh is the fastest?Yu can stand up and say yur answers as quickly as pssible.
. f the planets is like the earth, where peple can live.
prn.没有一人/一个Nne
The f the village is great.
n.环境envirnment
This is the .
n.系统,体系slar system太阳系adj.太阳的
They are studying in .
The is very vast(浩瀚的).
universen.宇宙
There are different in the universe(宇宙).
galaxiesn.星系
The shw is really beautiful and shining.
n.光/光线/光亮 light
Nthing is , if yu can wrk hard.
impssibleadj.不可能的
They are with each ther like ld friends.
v.联系,交流cmmunicating
The sights(风景) there is quite amazing.
Let’s cme t the passage.
1.What d yu knw abut space? 2.Why d these peple g int space? 3.What are they lking fr?
Pre-reading
The universe
Galaxy/ the Milky Way
the slar system
There are many galaxies in the universe.
With s may stars in space ,are we alne?Is there anyne n any ther planets?
1. Anyne ut there?2. Life n the Earth3. The sun and ther stars4. The stars at night
Read the passage quickly and chse the best title.
Fast-reading
Read Para.1 and answer the tw questins?
Fr hundreds f millins f years.
N, we haven’t yet.
Hw many years has there been life n the earth?
Have we fund life n any ther planets s far?
Careful reading
Try t put a grup f fllwing wrds in the rder frm “small” t “large”.
galaxy, planet, slar system, star, universe
Read para.2 and answer :
Why haven’t we fund life n any ther planets s far?
Because nne f the ther planets has an envirnment like that f the earth.
planet< star< slar system
Scientists have discvered many ther galaxies in the universe.
They have sent spaceships t travel utside the slar system.
Scientists have sent spaceships t the planet Mars …
A. B. C.
2.Where is the passage frm?
1.Tell the structure f the passage.
A. a stry bk B. a gegraphy magazine C.an ad
Read fr structure
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. □
Read after the vide and check (√) the true sentences.
Check (√) the true sentences.
In yur eyes, is there life uter space?If “yes”, are there any ther reasns why we haven’t fund life?
Deep thinking
When did yu arrive?What have yu met?What have yu discvered?Where has the spceship landed?Hw lng will yu stay?…
Pst-reading
Suppse yu have a chance t call the astrauts in space. What d yu want t knw? Wrk in pairs. Ask and answer.
Imagine yu are ne f the astrnauts in space nw. Write dwn yur answers and make it int a shrt passage .
The universe is full f pwer and mystery(神秘).
Never lse yur curisity(好奇心) in space like ur science heres.
(1) life cn.生命;性命;生命 save ne’s life 救命 lse ne’s life 丧命(2) un. 生活经历;生活 in ne’s life in ur daily life 日常生活(3) un. 生命;生物;活物
1.We have nt fund life n any ther planets yet.
Language pints
(1) 其后常跟f+名/代,可指人、物 Nne f the mney is hers. Nne f my friends/them is/ are here.(2) 区别nne和n ne a. nne 与f连用 n ne 不与f连用 b.nne指人、物 n ne指人 c.wh提问,回答用n ne hw many/much提问,回答用nne d.nne作主语、谓语单复数皆可;n ne作主语,谓语动词用单数。
2. Nne f them has an envirnment like that f the earth.
完成句子。1. __________ f us has been t Egypt.2. ___________ can d the difficult jb.3. All f the students were very tried, but ____________ stpped t have a rest.
(1)cmmunicate with... It’s hard t cmmunicate with parents. (2) cmmunicatin n. 沟通;交流
cmmunicate with...
3. Why has n ne cmmunicate with each ther?
4.数词在表示模糊数目的短语中用复数形式,且后面要加上f。hundreds f 数以百计的thusands f 数以千计的millins f 数以百万计的billins f 数以亿计的, 数十亿的百、千、百万、十亿如果和具体数字连用,百、千、百万、十亿须用单数形式。如:six hundred tw thusand nine millin seven billin
5.The earth is a planet and it ges arund the sun. Seven ther planets als g arund the sun. 1) g arund: 绕着……运转 The Earth ges arund the Sun.地球绕着太阳转。
2) ther/the ther/thers/antherther其它的(人或物), 后面经常跟可数名词复数形式; We haven’t fund life n ther planets yet. 我们还没有在其它的星球上发现生命。the ther(两者中的)另一个,后面不可能跟复数形式; He has tw daughters. One is a teacher, the ther is a dctr. 他有两个女儿,一个是老师,另一个是医生。thers其它的人或物(已经包括在内), 后面不能跟名词,本身就含有名词的含义; Sme peple came by car, thers came n ft.有些人是坐汽车来的,其他人是走着来的。(thers后面不能再加名词)anther(三者以上中的,或不知道数量的)另一个, 后面也不可跟复数形式。 Wuld yu like anther cup f tea?你要再来有一杯茶吗?(泛指再来一杯)
3) als adv. 也,同样;而且(不与否定式动词连用) She speaks French and German and als a little Russian. 她会说法语、德语,还会说一点儿俄语。
比较:als/t/as wellals, t, as well都指句中有关词语与前面提到的事物相结合或相一致,这三个词语的雅俗程度和在句中的位置有所不同。 als含较庄重色彩,通常用于主要动词之前(但若主要动词为be,则放于其后) She was rich, and she was als selfish. 她很富,她也很自私。t和as well比较通俗,通常用于从句的句尾。 I’ve read the bk and I’ve seen the film as well/t. 我看过这本书,也看过这部电影。
6. Hwever, n spaceship has travelled far enugh t reach ther stars in ur Galaxy. 然而,还没有任何航天器能到达银河系里的其他恒星。形容词/副词 + enugh t d表示“到达……程度,会发生某结果”。 He is ld enugh t g t schl. 他到上学的年龄了。 He gt up early enugh t catch the first bus. 他起得很早,赶上了首班车。
7. ... with s many stars in the universe, are we alne, r is there life ut there in space? ……宇宙中有这么多星球,我们是孤独的吗,抑或太空中还有其他生命存在呢?这里with s many stars in the universe是介 词短语,在句中作状语。with + 名词 + 介词短语,在句中做状语,表示伴随情况。 With s many things t d, we have n time t play. 要做的事情这么多,我们都没时间玩了。
8.alne adj.孤单的, 孤独的。作形容词时不作定语只作表语, 也可作副词。意思是“独自地”。侧重于说明独自一人,没有人陪伴, 不强调主观感情; I dn’t like ging ut alne after dark. 我不喜欢天黑后独自外出。比较:alne/lnelylnely表示心灵上的孤单。形容人时, 则表示情感上“孤独的;寂寞的”, 常作表语。 Althugh I’m alne, I dn’t feel lnely.虽然我独自一人,但是我不感到孤单。
Grup wrkFind ut the Chinese phrases accrding t the English meaning.
1.数亿万年2. 在地球上 3.在其他任何行星上4.围着…转5.……当中没有一人/没有一个6.认为…不7.星系;(尤指)太阳系8.银河系9.银河
10.数十亿11.…之一12.在宇宙中13.遥远14.是不可以想象的15.把…发送到…16.足够远17问问题 18.与某人联系/交流
1.数亿万年2.在地球上 3.在其他任何行星上4.围着…转5.……当中没有一人/没有一个6.认为…不7.星系;(尤指)太阳系8.银河系9.银河
1.hundreds f millins f years2.n the earth3.On any ther planets4.g arund5.nne f 6.dn’t think 7.The slar system 8.The Galaxy9.The Milky Way
10.billins f11.ne f12.in the universe13.far away14.It’s impssible t imagine 15.Send…t… 16.far enugh17.ask the questins18.cmmunicate with
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,
Cmplete the passage with the wrds and expressin in the bx.
slar system
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.
1. 地球是行星,它围绕太阳运转。 The Earth is a planet and it_____________ the Sun.2. 为什么不把书带回来? ____________________ the bk?3. 没有一个学生去过英国。 _______ the students __________ England.
Why nt bring back
根据汉语提示完成英语翻译。
4. 完成今天的作业不容易。 _______________ tday’s hmewrk.5. 我刚读过有关火星的书。 I ____________ bks _____ Mars.6. 从其他星系到我们这里要花费很多年。 It _____ many years _______ us frm ther galaxies.
It’s hard t finish
have just read abut
takes t reach
Hmewrkmust d 1.read unit 2 at least 3 the phrases f unit 2 at least 3 times.chse t dWrite a passage : describe the picture in activity 5 using the present perfect
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