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The?river?used?to?be?so?clean.?
The?air?is?badly?polluted.?
No?scientific?studies?have?showed?that?shark?fins?are?good?for?health.?
We?should?help?save?the?sharks.??
2.?技能目标:?能正确运用现在进行时，现在完成时，被动语态，情态动词和used?to?句型。?
3.?情感目标:?有环境危机意识，学会关注环境保护环境。教学重点1、能正确运用现在进行时，现在完成时，被动语态，情态动词和used?to?句型。?
2、保护环境的措施方法。教学难点?能正确运用现在进行时，现在完成时，被动语态，情态动词和used?to?句型课时安排约需6课时
课题名称Unit 13 we’re trying to save the earth!
Section A 3a ~ 4c小课时数第3课时主备教师合作教师授课类型fresh教学目标知识技能：
Target language:
No scientific studies have shown that shark fins are good for health.
The number of some kinds of sharks have fallen be over 90 percent in the last 20 to 30 years.
Grammar: Present perfect
Words and expressions;
Curriculum words: shark, cruel, harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation
Useful expressions: be harmful to, at the top of, the food chain, take part in, turn off, pay for, take action
过程方法：According to finishing some tasks to train students’ integrating skills and train the ability of expressing students’ own opinions．
情感态度：Animals are our friends． We must know how to love them and how to protect them． That way, It is good for both animals and us．教学重点Target Language教学难点 How to improve students’ integrating skills．教学准备教 学 过 程详细内容师生活动个性彰显3a. To give Ss practice in reading for specific information.
Learning more about sharks
Ask Ss to do some additional research to find out more about sharks before this lesson.
3b. To give Ss the opportunity to review the use of conjunctions.
Shark fin soup is a Chinese delicacy that is popular not only in China, but also among the Chinese population in other countries like Singapore and Malaysia.
Review of conjunctions
○ so: used to say that something is a result of something else that has just been mentioned.
e.g. I was tired, so I decided to take a map.
○ although: used to contrast one part of a sentence with another, has the effect of making the main idea in the sentence seem surprising or unexpected.
e.g. Although she studied hard, she did not pass the exam.
○ if: used to talk about the circumstances in which something else might happen; gives the condition for something else to happen.
e.g. If you study hard, you will do well.
○ but: used to contrast two parts of a sentence and 教 学 过 程教 学 过 程详细内容师生活动个性彰显show that they are opposite or very different in meaning.