初中英语Unit 2 We have not found life on any other planets yet优秀课件ppt

这是一份初中英语Unit 2 We have not found life on any other planets yet优秀课件ppt，文件包含外研版初中英语八下Module3Unit1Hasitarrivedyet课件pptx、Unit2Wehavenotfoundlifeonanyotherplanetsyet音频new_jh4_m3u2a2mp3、10现在完成时的时间标志词mp4等3份课件配套教学资源，其中PPT共23页， 欢迎下载使用。

Learning gals
1. T learn mre abut space and hw peple wrk hard t knw mre abut space. 2. T learn and try t recite the frnt part f the passage.3. T learn the present perfect.
Pre - reading
Lead in : 现在完成时态标志词
请将just, already, yet填入下列句子1. Has it arrived?2. I’ve made a mdel car.3. I haven’t finished.4. They have seen the mvie.
Let’s learn new wrds:
slar system
galaxy galaxies
space travel
Task 1 Wrk in pairs. Lk at the picture and talk abut what yu knw abut Chinese spaceships.
Shenzhu-9 is a manned spaceship.
While - listening
Task 2 Read the passage and chse the best title fr it.
Read and match the titles with the paragraphs:
Read alud the passage
Read the first three paragraphs and answer questins.
1. What is the earth like?The earth is a planet and it ges arund the sun.2. What is slar system?The sun and its planets are called the slar system.3. What have scientists discvered in the universe?Scientists have discvered many ther galaxies in the universe.
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.
Task 3 Nw 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.
Pst - reading
Task 4 Cmplete the sentences with the wrds 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.
cmmunite envirment nne slar system universe
Task 5 Lk at the picture frm a science stry fr children and answer the questins.