《What can we do at home to protect the environment?》SectionC PPT
第一部分內(nèi)容：新課導(dǎo)入
How can we become a greener person?
Turn off the lights when we leave a room.
Walk or ride a bike instead of taking a bus or a taxi.
Take a cloth bag when we go shopping.
Don’t drive a car if you travel a short distance.
Write on both sides of the paper.
Don’t use the things that can be used only once.
After we wash faces, we can use the water to wash clothes.
Turn off the TV set while we are away.
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《What can we do at home to protect the environment?》PPT，第二部分內(nèi)容：Paragraph
Paragraph 1
Read Paragraph 1 again, and then mark True (T) or False (F).
( ) It’s good that people produce power from coal.
( ) Nuclear power is dangerous. So we can’t use it.
( ) To solve the energy problem, people all over the world are looking for new ways to produce power.
Paragraph 2
Its key disadvantage is that the process requires a long time (up to 30 days )and the cost is high.它最大的缺陷是生產(chǎn)過(guò)程需要很長(zhǎng)時(shí)間（長(zhǎng)達(dá)30天）和成本高。
process n.步驟，過(guò)程 v.加工，處理
require v.需要，需求
require 有兩種用法：
*require (doing) sth. 表示主語(yǔ)“該...了”。
如： The floor requires washing. 地板該洗了。
*be required to do sth.表示主語(yǔ)必須（被要求）...
如:Students are required to attend classes.
學(xué)生必須按規(guī)定上課。
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《What can we do at home to protect the environment?》PPT，第三部分內(nèi)容：language points
German n.德國(guó)人，德語(yǔ)
pl. Germans
Germany n. 德國(guó)
E.g. They are Germans, and they are from Germany.
wheel n. 輪， 車(chē)輪， 輪子
Read the passage below and match the pictures with the sentences. Then discuss in detail the use of one energy source.
The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year.
deep adj.深的，厚的 adv.深深地， 在深處
run out 用完，耗盡
E.g. He has run out of food, so his children are hungry.
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《What can we do at home to protect the environment?》PPT，第四部分內(nèi)容：Summary
We learn:
1. Some words: technology, wheel, steel, require, German, guide , deep
2.Some phrases: run out
3.Some sentences:
(1)In many countries, people produce power from coal, but it is very dirty and causes acid rain.
(2)They will never run out so they are called renewable sources.
We can: Talk about the advantages and disadvantages of some kinds of energy.
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《What can we do at home to protect the environment?》PPT，第五部分內(nèi)容：Assignment
1.Read 1a.
2.Memorize the useful expressions and key sentences which we learn today.
3.Finish Section C in your workbook.
4.Review Section A-C.
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