【英语教案】Unit13Wearetryingtosavetheearth!教案
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Unit 13We’re trying to save the earth!
一、教学目标：
1. 语言知识目标
基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem,
industry, law, scientific, afford, reusable, transportation, recycle,
napkin, upside, gate, bottle, president, inspiration, iron, work, metal,
creativity,
基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull… down, bring back
基本句型：We’re trying to save the earth!
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。
二、教学重难点：
1. 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。
2. 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。
三、教学步骤:
Section A 1 (1a-2d)
Learning objectives:
1. To listen for specific information.
2. To talk about pollution and environmental protection.
3. To learn to use the sentence patterns.
used to...but nowshould do sth.
I. Presentation
Show the picture of the earth and tell students the earth is polluted now. Forexample: (1) The factories that burn coal pollute the air with a lot ofblack smoke.
(2)Factories put waste into the river.
(3)People should throw away litter in the bin.
(4)There are more cars on the road.
Learn some new words.
II. Work on 1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
noise pollution air pollution water pollution
____________ ___________ _____________
____________ ___________ _____________
____________ ___________ _____________
____________ ___________ _____________
III. Listening
1. Work on1b. Listen and complete the sentences.
2. Listen again and answer the following questions.
1)What does Tony want to do later this afternoon?
He wants to go swimming with Mark in the river later this afternoon.
2) Why doesn’t Mark want to go with Tony?
Because the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.
3) How was the river in the past?
It used to be so clean. It has been the nicest river in this town.
3. 原文
used to do sth. “过去常常……” 表示过去习惯性的动作但如今已不存在。
play a part in doing sth. “参与做某事; 在做某事上起作用”。
IV. Practice
1. Role-play the conversation in 1c.
Mark: The river was dirty. Even the bottom of the river was full of rubbish. Tony: But it used to be so clean!
Mark: Yes, but people are throwing litter into the river.
Tony: Everyone in this town should play a part in cleaning it up!
2. Make conversations using the pollution in 1a.
A: The river has always been the nicest river in this town.
B: Yes, it used to be so clean.
A: But I was there last weekend and the river was really dirty.
B: What caused the problem?
A: People are throwing litter into the river.
B: What should we do?
A: Factories are also putting waste into the river.
B: Yes, everyone in this town should play a part.
A: We should write to the government and ask them to close down the factories. B: What else can we do?
A: Everyone should help to clean up the river.
V. Language points