教学设计示例 Lesson22
Step I.Introduction:Show some pictures about pollution.
StepII.Fast reading:
A. Search for answers:(Now, I’ll give you 2 minutes to find out the answers:
1.what international organization has been mentioned in the text?
2.In China, what is becoming a serious problem?
B. Read again and answerT or F:
1. If waste is poured into rivers or seas without being treated,what will happen?
2. How is dangerous waste uauslly dealt with?
3. What problems does throwing away rubbish cause in western countries?
4. What is the situation like in China?
5. What has been done for environmental protection?
Step III.Fill in blanks.
Dealing with waste
1.Waste must be__treated___ so that it doesnot become a danger to life.(paragraph1)
2.When this river finally reaches the sea, it pollutes the ocean. (paragraph1)
3.Human waste is piped directly into the sea without being treated. (paragraph2)
4.It is now against the law to throw anything into the sea within 5 kilomnetres of land.
(paragraph3)
5.They seek to reduce waste, protect the earth, the oceans and all forms of life in them.
(paragraph5)
The throw-away society
1.This causes many problems. (paragraph1)
2.This is a particular problem for large cities. (paragraph1)
3.InChina,rubbish,such as used plastic bags and boxes known as “whitepollution”.
(paragraph1)
Step IV.Group work .(Divide the class into several groups and provide them with some topics of
the text ,such as :
1)How do people pollute the Ocean?(based on the text,the Ss can add something.)
2)How do people protect the sea and stop the pollution? (based on the text,the Ss can add
something.)
3)What are the problems in China? (based on the text,the Ss can add something.)
(Give them some minutes to prepare and say their opinions)
Step V. Languag points:
1.break down与 break up
break down:“分解”，可指物理变化或化学变化，如：
After many years,rocks broke down into dirt.（经过多年以后，岩石就分解成尘埃。）
Water can be broken down into hydrogen and oxygen.(水可以分解成氢和氧)
当表示“拆散”意思时，break down 与 break up 通用。如：
The old cars were broken down \up for their parts.(旧汽车被拆散以取得其零部件。)
break up:“撞毁，解体”如：
The ship was breaking up on the rock.(船在礁石上撞毁。)
2.depend on :“取决于…““靠…决定”如：
The price depends on quality.(价格取决于质量。)
3.without doing:通常在句中作方式状语。这里的动词-ing形式，可以是一般式，完成式，
复合结构和被动语态等，表示“(某人)未做，未曾做，未经…，未被…”等意思。如：
He was lucky ; he escaped from the burning house without being injured.
Do you think we’ll get a seat without having to queue?
They went back to the hotel without speaking.
Step VI.Home work:
Search for more information by themselves about the enviormental problems in
Beijing,China,the world and how to deal with them and what should we do in daily life.The Ss
will deliver their speech at the beginning of next class.
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