《We have not found life on any other planets yet》journey to space PPT免费课件

外研版八年级英语下册《We have not found life on any other planets yet》journey to space PPT免费课件，共42页。

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.

科学家认为地球上的生命已经有亿万年了。

millions of 数百万 hundreds of 数百

thousands of 成千上万 billions of 数十亿

2. The earth is a planet and it goes around the sun. Seven other planets also go around the sun.

地球是颗行星，它围绕着太阳转。此外还有七颗行星也围绕着太阳转。

go around… 围绕……运行

太阳系的其他七颗行星：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.

它们中没有一个有像地球这样的环境，因此科学家们认为在它们上面找不到生命。

none pron. 没有一人；没有一个；一点儿也没

4. So how large is the universe? It ’s impossible to imagine.

所以宇宙有多大？我们无从想象。

句型: It is + 形容词+to+动词原形意为“做某事很……”。

e.g. ____________________ these words. 读这些单词很难。

5. …with so many stars in the universe, are we alone, or is there life out there in space?

with+名词+介词短语，表示伴随情况，意思是“带着……”。

e.g. Mr. Zhang is coming with a book in his hand.

张老师手里拿着一本书进来了。

alone在句中作形容词，不作定语只做表语，也可作副词。意思是“独自地”。

lonely意思是“孤独的”

e.g. She was alone in that room, but she didn ’t feel lonely.

她独自一人待在那房间里，但是并不觉得孤独。