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1、Unit 4 Life on Mars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 foodsleeping bag(all) over againat a/ the speed of.connect to/ withcompare to/ wi
2、thcarry outafter allthink about traveling into spaceby the year 2100the rapid increase in populationbe of great help to.make sb. feel very illbecome more and more crowded and polluteda guide to (doing) sth.large numbers of passengersin the form of.with the development of technology（三）重点句型1. How do y
3、ou 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 M
4、ars.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
5、-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 cant
6、 come to school because he is ill. The boy cant come to school _ _ _ _.(2) I cant work out the maths problem if you dont help me.I cant 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 photo often reminds me _ my trip
7、to the USA ten years ago. (2) I am sure that the concert tickets will be expensive. I am sure _ the _ price for the concert tickets.3. 用介词把定语从句转换成简单句e.g. (1) Do you know the woman who is holding a baby in her arms? Do you know the woman _ a baby in her arms? (2) I prefer to stay in a hotel room whic
8、h has a sea view. I prefer to stay in a hotel room _ a sea view.四、当堂巩固A）单项填空1. How do you like your school life? _. (2014南通)A. Its a famous school. B. Its very colorful.C. Id like to study here. D. I like my school.2. The documentary A Bite of China II is quite popular around China recently. How do
9、you like it? _. (2014 南京)A. I think so. B. Pretty good. C. Its my pleasure. D. All right.3. There are _ doctors in the hospital; _ of them are women doctors.（2014 黄石）A. two hundred; two fifth B. two hundreds; two fifthC. two hundred; two fifths D. two hundreds; two fifths4. The basketball match was
10、really fantastic, _ when Shu-How Lin scored in the last second. (2014 德州)A. probably B. especially C. exactly D. mostly5. Its difficult to _ the discussion with all this noise around us.A. carry off B. carry on C. carry in D. carry away6. Its exciting to be a chairperson, but Im _ my ability to do a
11、ll the extra work.A. looking about B. learning about C. quarrelling about D. worrying about7. Im sorry, sir. Ive made a lot of mistakes in exams. Never mind. _, the exam is a little difficult. (2014 呼和浩特)A. In all B. First of all C. After all D. Above all8. About _ of the earth _ covered with water,
12、 but we have less and less available fresh water. (2014 泰州)A. three-fourth; is B. three-fourths; is C. three-fourth; are D. three-fourths; are 9. The summer holidays are coming, so the twins as well as Jack _ to Hong Kong for vacation. (2014 黄石)A. is going B. are going C. goes D. go10. Did you have
13、a sports meeting yesterday? No, we didnt. It was put off _ the heavy rain. (2014 襄阳)A. instead of B. because of C. as for D. across from11. Look at those teachers over there. Which is your new art teacher? The man _ curly hair. He is very funny. (2014 凉山)A. with B. in C. on D. for12. I am not sure _ he will come here. _ he comes here, please let me know.A. that, When B. that, If C. if, Whether D. whether, If 13. The weather in summer in Beijing is cooler than _ in Shanghai.A. this B. it C. that D. one 14. Would you please tell me_?A.
