Unit 13 We are trying to save the earth知识点总结.doc

Unit 13 We are trying to save the earth!1 教材知识详解Section A 1. The air has become really polluted around here.(1) 现在完成时（复习）(2) become 2. Well, cut down air pollution, we should take the bus or subway instead of driving.(1) cut down (2) instead of 与instead3. There are other advantages of bike riding. Its good for health and it doesnt cost anything! 考点：advantage4. And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.(1) remember to do remember doing (2) 系动词keep(3) everyone与every one 5. Many have heard of shark fin soup.hear of 听说hear短语归纳： 6. When people catch sharks, they cut off their fins and throw the shark back into the ocean.cut off 连接名词或代词时，名词或代词应放在_cut短语归纳：off短语归纳：7. This method is not only cruel, but also harmful to the environment.(1) cruel (2) not only.but also (3) be harmful to 8. So far, no scientific studies have shown that shark fins are good for health, so why eat them?考点：so far9. Many believe that sharks can never be endangered because they are the strongest in their food chain.(1) the strongest(2) Endanger10. afford /spend/take/cost/paySection B 1. Do you often throw away things you dont need anymore?考点：throw away2. Have you ever thought about how these things can actually be put to good use?(1) think about (2) put .to good use*put 其他短语：3. She lives in a house in the UK that she built herself out of rubbish.(1) built.out of sth(2) 定语从句复习4. The windows and doors come from old buildings around her town that were pulled down.考点：pull down*pull其他短语：5. She opened a small shop where she sells her bags, and she has also set up a website to sell them on line.(1) This is the city where I was born.(2) set up *set相关短语：6. Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a little creativity.(1) not only.but