外研版八年級英語下冊《We have not found life on any other planets yet》journey to space PPT免費課件，共42頁。
Read and fill
Scientists ____________(send) a spaceship to Mars. The journey ____________(take) several months. It _____________ (arrive) already, but they __________________ (not discover) life on Mars yet.
Astronauts ______ already ______(be) to the moon, but no one __________(be) to Mars yet, because Mars is very ____________, much farther than the moon. Lots of scientists are working hard _____________send astronauts to Mars one day.
The Earth is a planet.
The earth and other seven planets go around the sun.
The solar system is a small part of the galaxy.
The galaxy is a small part of the universe.
Ask and answer with your deskmate.
1. Have we ever been to the moon?
2. Have we ever been to the sun?
3. How many planets have we found in the solar system?
4. Have we ever gone beyond the moon?
5. Have we found life on other planets yet?
Language points
1. Scientists think that there has been life on the earth for hundreds of millions of years.
科學家認為地球上的生命已經(jīng)有億萬年了。
millions of 數(shù)百萬 hundreds of 數(shù)百
thousands of 成千上萬 billions of 數(shù)十億
2. The earth is a planet and it goes around the sun. Seven other planets also go around the sun.
地球是顆行星，它圍繞著太陽轉(zhuǎn)。此外還有七顆行星也圍繞著太陽轉(zhuǎn)。
go around… 圍繞……運行
太陽系的其他七顆行星：水星 (Mercury)、金星(Venus)、 火星(Mars)、木星(Jupiter)、土星(Saturn)、天王星 (Uranus)、海王星(Neptune)。
3. None of them has an environment like that of the earth, so scientists do not think they will find life on them.
它們中沒有一個有像地球這樣的環(huán)境，因此科學家們認為在它們上面找不到生命。
none pron. 沒有一人；沒有一個；一點兒也沒
4. So how large is the universe? It’s impossible to imagine.
所以宇宙有多大？我們無從想象。
句型: It is + 形容詞+to+動詞原形意為“做某事很……”。
e.g. ____________________ these words. 讀這些單詞很難。
5. …with so many stars in the universe, are we alone, or is there life out there in space?
with+名詞+介詞短語，表示伴隨情況，意思是“帶著……”。
e.g. Mr. Zhang is coming with a book in his hand.
張老師手里拿著一本書進來了。
alone在句中作形容詞，不作定語只做表語，也可作副詞。意思是“獨自地”。
lonely意思是“孤獨的”
e.g. She was alone in that room, but she didn’t feel lonely.
她獨自一人待在那房間里，但是并不覺得孤獨。
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關(guān)鍵詞：We have not found life on any other planets yet PPT課件免費下載，journey to space PPT下載，.PPTX格式；
