Unit 13 We ’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 u, pull⋯ down, bring back
基本句型 ：We’re trying to save the earth!
The river ud 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 ud to 柴胡疏肝散副作用句型。
3.情感目标 : 有环境危机意识，学会关注环境保护环境。
科学问题及答案
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 ud 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 ud to 句型。三、教学步骤 :
Section A 1 (1a-2d)
I. Prentation
Show the picture of the earth and tell students the earth is polluted now.
For example: (1) The factories that burn coal pollute the air with a lot of black 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.
II. Learning
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
个人向单位承诺书范文loud music | | cars | rubbish | planes littering | ships | factories |
smoking | building hous | | | mobile phones | | |
noi pollution | air pollution | water pollution | | |
____________ | ___________ | _____________ | | |
____________ | ___________ | _____________ | | |
____________ | ___________ | _____________ | A啥意思 | |
葡萄酒保质期____________ | ___________ | _____________ | | |
| | | | | | | |
Keys : noi pollution loud music planes mobile phones building hous
air pollution factories皓首穷经 smoking cars building hous
water pollution ships rubbish littering factories
III. Listening
1. 1b Listen and complete the ntences.
含笑的成语
What was the problem? | The river was | _____________. Even | the |
| 篮球位置bottom ( 底 部 ) | of | the river was full | of |
| ________. There were no more ______ for |
| fishermen (渔民 ) to catch. | |
What caud the problem? | People are throwing | _______ into the river. |
| Factories are putting ______ into the river. | |
| | | | |
How should the problem be solved? We should write to the ____________ and ask
them to ___________ the factories. Everyone
should help to __________ the river.
Keys: really dirty rubbish fish litter waste government
clo down clean up
2.Listen again and check √( ) the ntences you hear.
1) We could go fishing in the river.
2) The river was really dirty.
3) The river has always been the nicest river in this town.
4) We should ask the teachers for help. Keys: 2 3
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 ud 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 ud to be so clean.
A:But I was there last weekend and the river was really dirty.
B:What caud the problem?
A:People are throwing litter into the river.
B:What should we do?
