Unit 7 The sea Lesson 2 课件（北师大版必修3）.ppt

* * * * Lesson 2 Protecting the Sea How do people use the sea? How is the sea important to people? Example: People can do water sports in the sea. People catch fish in the sea. There are many more things that we can find for food in the sea. Before you start diving water skiing surfing Besides water sports, how do people make use of the sea? food transportation oil medicine research oil research People can get sea food such as: fish, sea animals and plants; the sea is rich in many natural resources. We can get oil, natural gas and some metals. Besides, the sea has a great effect on climate on the earth. There is terrible sea pollution. The sea is terribly polluted. Now what has happened to the sea? Pre-listening What is polluting the sea? agricultural waste industrial waste oil plastics chemicals rubbish What should we do to handle the problem? We have found some solutions to the problem. For example, in some places fishing is banned completely. deal with ways Bicycle is a good exercise; moreover, it does not pollute the air. ( 污染 ) 词性：vt. 动词 Here are three kinds of pollution. Among them, which is the most serious, air pollution, water pollution or noise pollution? (污染) 词性：n. 名词 2. By 1900 Britain was a mainly industrial society. ( 工业的 ) 3.The country‘s economy(经济) is mainly agricultural and depends on crops like coffee.( 农业的 ) 4 Smoking is banned in the train. ( 禁止 ) 5. Some customers are quite difficult to handle. (对付 ) 6. He moved from Quality Control Department to the Sales Department. (部， 部门 ) 7. Both sides are trying to find a peaceful solution. (解决 办法) 8.The government has promised to reduce the amount of chemicals used in food production.( 化学物 ) 9. Dolphins are very intelligent, they can communicate.They’re animals of high intelligence.( 聪明的 ) ( 智力，理解力 ) pollute vt. pollution n. industry n. industrial adj. agriculture n. agricultural adj intelligence n.