七年级下册Unit 4 Save the trees.精品ppt课件

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Lk at the picture and guess:
It's the Amazn rainfrest.
Where is it?
What d yu knw abut the Amazn rainfrest?
The Amazn rainfrest is called “the lung f the wrld”. There are all kinds f plants there.
There are all kinds f animals there.
It is the hme f all kinds f birds, t.
The Amazn rainfrestThe Amazn rainfrest in Suth America is the largest rainfrest in the wrld. It cvers five and a half millin square kilmetres f the Amazn Basin and spreads acrss nine cuntries.The Amazn rainfrest is very imprtant because it is hme t thusands f animals, birds and insects.
Listen, read and understand.
Hwever, peple are destrying the area by cutting dwn many f the trees. This is called “defrestatin”. Many living things lse their hmes because f defrestatin. As a result, the number f kinds f animals, birds, insects and trees in the wrld is decreasing. We must d ur best t prtect the Amazn rainfrest.
Language pints
1.The Amazn rainfrest is very imprtant because it is hme t thusands f animals, birds and insects. 亚马逊雨林是非常重要的，因为它是成千上万的动物，鸟类和昆虫的家园。 thusands f+名词复数 “ 数千……，成千上万的”表示笼统数字, 前面不能加具体数字。eg. Thusands f peple paid gd mney t watch the band perfrm. 成千上万的人花很多钱去观看这支乐队的演出。
thusand　“千”，前面要用具体数字，即“数字+thusand +名词复数”eg. It cst smewhere arund tw thusand dllars. 买下来要花大约两千元。(注：类似用法的还有hundred, millin, billin等)中考易错题：There are abut _____ peple n the square.A. thusand f B. tw thusandsC. thusands f D. tw thusand f
2. Many living things lse their hmes because f defrestatin. 许多生物因为砍伐森林而失去家园。 because f 因为...，后接名词或者动名词 because 因为...，后接从句eg. She desn't g t schl because f her illness. = She desn't g t schl because she is ill. 她没来上学因为她生病了。
中考专题练习：选用because或because f填空。1. __________ his bad leg, he culdn't walk s fast as thers.2. They didn't g swimming ________ it was raining hard.3. ——Why can't yu d it nw? ——__________ I'm t busy.4. He didn't cme tday __________ his illness. 
3.As a result, the number f kinds f animals, birds, insects and trees in the wrld is decreasing. 因此，世界上动物、鸟类、昆虫和树木的种类正在减少。 the number f ……的数量，后加可数名词复数，作主语时，谓语动词用单数 a number f 许多，后加可数名词复数，作主语时，谓语动词用复数
eg. The number f turists tails ff in Octber. 十月份游客人数越来越少。 I have a number f things t d tday. 我今天有许多事情要做。 中考链接： ______ f ur wrkers is 800, and ______ f them are wmen.(山东营口中考)A.A number; a number　　 B.The number; the numberC.A number; the number　 D.The number; a number
Find ut the main idea f each paragraph.
Paragraph 1 Paragraph 2 Paragraph 3
a. the prblem f the Amazn rainfrest b. the things what we shuld d fr the Amazn rainfrestc. the psitin and the measure f area f the Amazn rainfrest
1. Where is the Amazn rainfrest? In Suth America.2. Hw large is the Amazn rainfrest? It cvers five and a half millin square kilmetres f the Amazn Basin and spreads acrss nine cuntries.
Answer the questins accrding t the article.
3. What des “defrestatin” mean? It means destrying frests by cutting dwn the is the result f defrestatin? Many living things lse their hmes and the number f kinds f animals, birds, insects and trees in the wrld is decreasing.
Reading task
Nw cmplete the ntes.
·The Amazn rainfrest is the (1)_______ rainfrest in the wrld.·It cvers 5.5 milln square kilmetres f the (2)_______________.·It spreads acrss (3)______ cuntries.·The rainfrest is imprtant because it is (4)________ t many living things.·The rainfrest is in danger because f (5)___________ (the cutting dwn f trees).
Amazn Basin
defrestatin
What else d yu knw abut the Amazn rainfrest? In grups, d sme research and discuss it.
Pre-reading
What kind f tea are they?
Lk and talk abut the questin.
Chinese teaTea is the mst ppular drink in the wrld besides water. All tea cmes frm the tea plant. Peple pick leaves frm it t make tea.The habit f drinking tea has a lng histry in China. Accrding t an ld stry, Chinese Emperr Shennng discvered tea. Lu Yu, a writer during the Tang Dynasty, wrte the first bk abut tea.There are several types f Chinese tea, such as white tea, green tea and black tea.
Answer the fllwing questins:
1. Where des tea cme frm?2. Accrding t an ld stry, wh discvered tea?3. What did Lu Yu d during the Tang Dynasty?
Tea cmes frm the tea plant.
Chinese Emperr Shennng discvered tea.
Lu Yu wrte the first bk abut tea.
D yu like drinking tea? What else d yu knw abut tea?
D yu knw the famus peple's middle names?
In grups, have a brainstrming meeting and write dwn yur ideas fr the green prject.
design an indr garden r a rf garden plant mre trees and flwers reduce, reuse, recycle
Write a plan fr yur prject. Use the utline belw t help yu.
be cvered with thusands f living things lse ne's hme because f as a result the number f d ne's best t d
被……覆盖成千上万 生物失去家园因为结果……的数量尽力做……
Chse the answers.
1.The number f the students _____ abut nine hundred. A number f the students _____ frm China.A. is; is B. are; are C. are; is D. is; are2. All the peple went hme ______ Mr Wang, fr he had t finish his B. besides C. with D. fr
3.The rainfrest is hme ______ animals.A. f B. fr C. t D. abut4. Please ______ the fd ______ a ; in B.cver; withC.cvered; with D.cver; f5. During the May Day hliday, we stayed in a muntain village with ______ trees arund. A. thusand f B. thusandC. thusands D. thusands f
Fill in the blanks accrding t the sentences and the Chinese wrds:
1.Which _________(雨林) is the largest in the wrld? 2. It's ur duty t _______(保护) ur earth.3. There is a big ________ (洞) in the wall.4. The Amazn rainfrest is in ______________ (南美洲). 5. The park in Shenyang cvers 3.3 ________________ (平方千米).
Suth America
square kilmeters