公开课2011.8.19.ppt

Q1:What are the three Rs? Q2:What kinds of things can we do at home to protect the environment? * Earth Song Together This kind of pollution makes people sick, it causes them breathing problems and liver cancers. People pour waste water into rivers and lakes. So this kind of pollution is almost everywhere in China. People use chemical too much in their fields . So this kind of pollution causes unhealthy food. This kind of pollution influences our environment . In some cities, this kind of pollution is caused by many cars. The government has done something useful to stop it. This kind of pollution is harmful to our eyes. There are many kinds of pollution in the word, and they are bad for our health. pick some garbage up throw some garbage about The man is picking some garbage up __________(but/while) some people are throwing some garbage about. but/while Nodding the head means agreement _______shaking the head means disagreement. while We should plant more trees or there will be more desert. What’s the usage of conjunctions? -----or , and, but or while or 否则的话，表选择关系。 and 并且，而且 表并列或动作先后关系。 but 但是， 表转折关系。 while 而，然而 强调对比。 强调对比时可互换 Noise is a kind of pollution. It’s harmful to our hearing. 1.Noise is a kind of pollution and it’s harmful to our hearing. Join the sentences with or, and, but or while. The earth is beautiful. People are hurting the earth now. 2.The earth is beautiful but people are hurting the earth now. Join the sentences with or, and, but or while. Work hard. You will fail the exam. 3.Work hard or you will fail the exam. Join the sentences with or, and, but or while. She was busy cooking. They were watching TV. 4.She was busy cooking while they were watching TV. Join the sentences with or, and, but or while. Nodding the head means agreement. Shaking the head means disagreement. 5.Nodding the head means agreement while/ but shaking the head means disagreement. Join the sentences with or, and, bu