课件18张PPT。The Itaipu and Aswan DamsLead-inLead-inWhat’s the dam in the picture? What’s the rank(排名) of it in the world?Do you know the second and the third largest dams in the world?
the Three Gorges Dam, which is the largest in the world.Learning aimsTo learn some words and useful expressions
To know about Non-defining attributive clauses(非限制性定语从句）
To learn to consider problems from two sides dialectically(辩证地)Fast-readingThe Itaipu DamThe Aswan High DamPart 1.(Para. - ) _____________Part 2.(Para. - ) __________________1346Read the text quickly to find out the structure of it. Task 1. Read the first three paragraphs to
complete the diagram about the
Itaipu Dam.Detailed-reading The Itaipu DamThe Itaipu DamLocation: ________________________ Rank:_____________Advantages:Disadvantages:1.a ______attraction2.provide ________touristelectricity1.destruction of ______2.disappearance of ________3.______ with mud4.cause ______blockedwildlifeforestdiseasesbetween Paraguay and Brazil the 2nd largestTask 2. Read the last three paragraphs to
complete the short passage about
the Aswan High Dam.Detailed-reading A brief introduction of the Aswan High Dam The Aswan High Dam ____(lie) in Egypt, _____ was built in 1970, is the third ______(large) in the world. Just as every coin has two sides, the dam has both advantages ____ disadvantages. On the one hand, it can generate power and control flow of the Nile. On the other hand, it stops the floods from _______(carry) rich soil to the farmland and makes it ______(poor) than before. What’s more, to build the dam, many people were _______(move) far from their homes and many sites _____ (be) submerged forever. The Aswan High Dam ____(lie) in Egypt, _____ was built in 1970, is the third ______(large) in the world. Just as every coin has two sides, the dam has both advantages ____ disadvantages. On the one hand, it can generate power and control flow of the Nile. On the other hand, it stops the floods from _______(carry) rich soil to the farmland andlieswhichlargestandcarryingA brief introduction of the Aswan Dammakes it ______(poor) than before. What’s more, to build the dam, many people were _______(move) far from their homes and many sites _____ (be) submerged forever.
movedwerepoorerA brief introduction of the Aswan Dam The Aswan High Dam ____(lie) in Egypt, _____ was built in 1970, is the third ______(large) in the world. Just as every coin has two sides, the dam has both advantages ____ disadvantages. On the one hand, it can generate power and control flow of the Nile. On the other hand, it stops the floods from _______(carry) rich soil to the farmland and makes it ______(poor) than before. What’s more, to build the dam, many people were _______(move) far from their homes and many sites _____ (be) submerged forever.
Detailed-reading Task 3. Work in groups to underline all the
Non-defining attributive clauses in the
passage and summarize two main features
of them.与主句用逗号隔开关系代词不用thatDeep-thinking 1. What’s your opinion of the construction of the Itaipu and Aswan dams?
2. Is it good or bad to build such dams?
We should balance the advantages and the disadvantages when we want to make a decision.
Consolidation 假设你是李华，你的美国朋友Peter对三峡大坝很感兴趣，给你来信询问三峡大坝建设的利与弊以及你的个人看法。请你根据本节课所学的内容及给出的格式给他回一封E-mail阐述你的观点。
注意：
词数50个左右（已给出的文字不计算在内）。
运用1-2个非限制性定语从句。
可适当增加细节，以使行文连贯。
Homework 1. Polish your writing.
2. Discussion:
Should we promote the development of the Green-car(新能源汽车)？Why？Thank you评测练习
I. Choose the correct information into different blanks.
A. Disappearance of wildlife.
B. Generates half of Egypt’s electricity.
C. People’s homes lost. D. Causes diseases.
E. Provides electricity for Paraguay and Brazil.
F. Ancient sites submerged.
Advantage
Disadvantage
The Itaipu Dam
The Aswan High Dam
II. Decide if these statements are true or false.
1. It took 30,000 people six years to build the Itaipu Dam.
2. Today, millions of tourists visit the Itaipu Reservoir.
3. Itaipu provides Brazil and Paraguay with all their electricity.
4. The Itaipu Reservoir has to be cleaned regularly.
III. Complete the following passage.
The Itaipu Dam, ________ is the second largest dam in the world, was completed in 1982. It provides Paraguay and Brazil ______ a regular supply of water. Besides, it has a huge hydro-electric power station, which __________(generate) electricity for the two countries. _____________(unfortunate), it has also created many problems. The construction of the dam has destroyed the forest. As _____ result, much wildlife has disappeared. Also, the mud in the dam makes the reservoir water dirty and causes________ (disease). Moreover, it is extremely expensive _________ (clean).
IV. Please make the two sentences into one sentence using an attributive clause.
1. The dam was built in 1970.
The dam is the third largest in the world.
____________________________________________________________________________________________________________________________
?2. Lake Nasser is named after the Egyptian leader.
The Egyptian leader built the dam.
____________________________________________________________________________________________________________________________
V. Please fill in the blanks using the expressions and attributive clauses we have learnt.
Every coin has two sides, so does the Xiong’an New Area. The Xiong’an New Area, _____________________ （位于河北省,定从） covers 100 square km initially. __________________________（新区的建设） has many advantages. To begin with, it can _______________________（发展当地的经济）. Besides, it can offer ___________ (居民)more jobs. As a result, they can make more money. However, it can also _____________________（引发很多问题）. Streets will _________________（挤满了车）, so there will be more traffic jams, ____________（这会让人们的生活困难，定从）. In addition, the development of the city will cause much pollution to the local environment.
