9下Unit4Reading演示课件.pptVIP

Unit 4;Words and;Words and;Words and;Let’s enjoy some videos.;1. To learn something about life on Mars 2. To learn the words and phrases in this passage;Words: planet polluted rapid increase passenger rapidly tasty compare;Do you think it is possible for human beings to live on Mars?;Read the passage, match the words on the left with the meanings on the right.;Match the keywords with the links. Write the correct letters in the blanks.;Read the passage and chose the best answer.;Read the passage and chose the best answer.;Read the passage and answer: What will life be like? ;Food ;education ;Complete this list. Use the information from the article on pages 52 and 53.;Read the passage carefully and complete the list.;Earth today;Fill in the blanks.;People would have to _______ boots that are specially designed to prevent themselves ________________ (float off )into space. At the same time, people on Mars would have more space. They might live in houses with huge comfortable rooms. Also, robots would do most of their work _______ they could have more time to relax. Life on Mars would be interesting __________ challenging.;1. At present, our spacecraft are too slow to carry large numbers of passengers to Mars. 目前，我们的宇宙飞船太慢了，无法运送大批的乘客去火星。;2. With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! 随着技术的发展，到2100年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！;By the?time?I got to the station the train had already gone. ;3. The gravity on Mars is only about three-eighths of that on the Earth. 火星上的重力大约只有地球上的八分之三。;Three-eighths 八分之三 分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子，序数词表示分母。如： one-tenth 十分之一 a third 三分之一 注意：分子除用one外，也可用a；;two thirds 三分之二 four fifths 五分之四 但是，1/2不能说a (one) second, 而要说 a (one) half。1/4和3/4可以说 a (one) fourth 和 three fourths, 但常用a quarter 和 three quarters表示。; 选择题。 About ______ of the students are from foreig