外研版八年级下Module3 Unit2课件 .pptVIP

接龙 Match the words with the pictures. A. galaxy B. planet C. solar system D. star E. universe √ × 1. The earth is a star. 2. The sun is a star. 3. There is more than one galaxy in the universe. 4. The light from the stars in other galaxies has travelled for a long time to reach us. 5. Scientists have received many messages from space. 6. Spaceships have visited most of the universe. √ √ × × Task 3 P21 3 Check(√) the true sentences. planet part haven’t 1 2 3 4 5 6 Where can we find the answers? Translate the following phrases into English. 1.数百万 ___________________ 2.运转 _____________________ 3.太阳系 _________________________ 4.遥远 _________________________ 5.足够远 __________________________ 6.和……联系 ______________________ 7.没有一个人 ______________________ millions of go around solar system far away far enough communicate with… no one Task 4 Is there life on other planets? There are seven other planets in our (1)___________, but (2)__________ of them has a(n) (3)__________ like that of the earth. Spaceships from the earth have done surveys of the other planets, but they have not found any life there. Why has no one from other planets tried to (4)____________ with us? It is true that scientists have not discovered life on other planets in the (5)________ yet, but some scientists believe that they will find it some day. communicate environment none solar system universe solar system none environment communicate universe Complete the passage with the words and expressions in the box. 4 P21 Task 5 1. Scientists think that there has been life on the earth for hundreds of millions of years. 科学家们认为地球上的生命已经有上亿年的历史。 hundred前加基数词，表示“一百、二百、三百……”，hundred要用单数形式；hundred与of连用表示“数百”时，hundred要用复数形式，即hundreds of。hundreds of millions of表示“数亿，上亿”。 例如： There are eight hundred students in our school. There are hundreds of people in the park. We planted _____ trees last year. A. hundreds of B. hundred of C. five hundreds D. five