[中学联盟]江苏省永丰初级中学九年级英语下册：Unit 4 练习

9B Unit 4 一、易错题回放 二、自主复习 （一）重点单词1.行星__________ 2. 被污染的___________ 3. 围绕；将...圈起来_______ 4. 增加（n.）________ 5. 乘客____________ 6.使人不舒服的；不舒适的_____ 7. 味道好的________ 8. 专门地，特地_________ 9. 一致，同意(n.)________ 10. 快的，迅速的 (adj.)_________(adv.)________ 11. 外来者，陌生人_____ 12. 可能性（n.）______ (adj.)_______ 13. 风险______ 14. 电子的________ （二）重点短语 dried food sleeping bag (all) over again at a/ the speed of.... connect to/ with compare to/ with carry out after all think about traveling into space by the year 2100 the rapid increase in population be of great help to... make sb. feel very ill become more and more crowded and polluted a guide to (doing) sth. large numbers of passengers in the form of... with the development of technology （三）重点句型 1. How do you like life on Mars?= What do you think of life on Mars? 2. I thought you liked Mars. 我原以为你喜欢火星。 3. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. 4. It is hoped that people could start all over again and build a better world on Mars. 5. With the development of technology, by the year of 2100, the journey might only take about 20 minutes in space shuttles (that travel at the speed of light.) 6. So far, nobody knows whether there would be enough water or oxygen on Mars for people there. 7. The gravity on Mars is only about three-eighths of that on Earth. 8. Life on Mars would be interesting as well as challenging. 9. It takes Mars about two Earth years to circle around the Sun once. 10. I am not sure if it is worth the risk. 三、语法知识点疏理 (简单句和复合句之间的转换) 状语从句可通过介词短语转换成简单句，定语从句和宾语从句可通过介词转换成简单句。 1. 用介词短语将状语从句转换成简单句 e.g. (1) The boy can’t come to school because he is ill. The boy can’t come to school _________ _______ _______ ______. (2) I can’t work out the maths problem if you don’t help me.I can’t work out the maths problem ________ ________ ________.2. 用介词把宾语从句转换成简单句 e.g. (1) The photo often reminds me that I traveled to the USA ten years ago. The phot