(课件网) Unit 6 Earth first FREE TALK Do you know anything about polar bears What threats do they face Do you know any other endangered species Watch the video and answer the questions. Watch the video—Save Life on Earth and answer the questions. 1. Which of the facts in the video do you find most alarming 2. What does the video want to tell us The most alarming fact I find in the video is that around 150 to 200 species of plants and animals become extinct - nearly 1,000 times the natural rate of extinction. Severe environmental problems we are facing nowadays make our future uncertain. It’s time for everyone to take action now and make our planet a greener and safer place for our future generations. Look at the cartoons and answer the questions. 1. What environmental problem does each cartoon refer to water pollution deforestation air pollution global warming 2. What are the causes of these problems water pollution: people drop litter carelessly; industrial waste-water discharge... deforestation: people cut down trees to making paper... air pollution: illegal discharge of industrial waste gas... global warming: heavy use of private cars... 3. What do you think is the most serious environmental problem we face today What should be done to help solve it Choose reusable item Get renewable energy Help plant trees ... Tick the words that you would use to describe sharks. Add any more you can think of. Read the passage and find out how sharks are described in the film Jaws. Vocabulary 1. scared be scared of (doing) sth. 害怕(做)……;对(做)……感到惊恐 be scared to do sth. 不敢做某事 be scared to death 吓得要死 be scared that... 害怕…… 练习：Those naughty children were _____ (scare) into telling the truth. scared Vocabulary 2. cut...off cut of the water supply 切断水源供应 cut across 抄近路穿过 cut a way 切掉，剪掉 cut down 砍倒:削减，缩短 cut up 切碎;剁碎;使伤心;使悲伤:健难受 cut in 插嘴;突然插入 cut out 切掉;删掉 练习：I was speaking to Ann on the phone when suddenly we were cut _____. off Vocabulary 3. have a(n)...effect on/upon have a positive/negative effect on 对……有积极的/消极的影响 bring/put sth. into effect 使……生效/实行/实施 take effect 开始起作用;生效，开始实施 have an/no effect on 对……有/没有影响 come into effect 生效，开始实施 in effect 实际上,事实上;有效 练习：A change in diet today could take several months to have an effect _____ your hair. on Vocabulary 4. target set oneself a target of 给自己设定一个......目标 reach/achieve...target 达到/实现……目标 meet/achieve/reach a target 完成/达到目标 aim at the target 瞄准目标 hit/miss the target 中/脱靶 on/off target 切/不切题 练习：This course is targeted mainly _____ English beginners. at/on Vocabulary 5. mistake learn from one's mistakes 从某人的错误中学习 make no mistake (about sth.) 别搞错;注意 in mistake for sth. 误以为是某物;错看成某物 mistake...for 把……错当成…… mistake...as 把……错看做…… be mistaken about 误解… ... ...
