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1、 How many continents are there in the world? What are they? What do you know about the place where you live?LESSON 38: THE WORLD IS A BIG PLACETASK-BASED READING1. What is the problem the earth faces?2. People can live on the seven continents. ( ) (判斷正誤判斷正誤)3. How much of the world is covered with l

2、and?4. What is largest part of the ocean ?5. It must be treated well for our chidren and for our childrens children, too. ( Translate)The population is increasing very quickly.FOne third .The Pacific Ocean.為了我們的子孫后代我們一定要善待地球?yàn)榱宋覀兊淖訉O后代我們一定要善待地球.IN TOTAL ON THE EARTH IN THE FUTUREBE COVERED WITH BE TRE

3、ATED WELL Once the world _ green plants and the living things led a peaceful life_. However, later some animals_ and was even killed for money. There are not many_. Luckily, people are trying to save the animals in danger now. We all hope that all the living things will live a pleasant life as befor

4、e _.was covered withon the earthwere not treated wellin totalin the future The earth is our home. We must take care of it. Life today is easier than it was _1_ years ago, but it has brought some new problems. One of the biggest problems is pollution. We can see it, smell it, drink it and even hear i

5、t.Man has polluted the _2_. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so _3_ people. When the land was used up or the river was not clean in a place, man went to _4_ place. Now man is slowly polluting the whole world._5_ pollution is s

6、till the most serious, its bad for _6_ things in the world. Many countries dont let people burn _7_ for air in the houses and factories in the city. Pollution by SO2 is now the most dangerous kind of air pollution. Its caused by heavy traffic. People say its _8_ to ride bikes. When you are riding, t

7、here is no pollution. But even in developed countries, most people dont go to work by bike. Its not because bikes are expensive or people are tired if they ride to work. Its because the number of cars on the roads becomes larger. So more people _9_ their bikes and go to work by car, then things are

8、getting worse and worse. We should have special roads only for bikes and make it _10_ difficult and expensive for drivers to take their cars into the city that they will go back to using their bikes. （ ）1. A. hundrB. hundreds of C. hundred ofD. hundreds （ ）2.A. moonB. starC. earthD. sun （ ）3.A. lotB

9、. littleC. manyD. much （ ）4.A. othersB. the othersC. the otherD. another （ ）5.A. AirB. FoodC. WaterD. Noise （ ）6.A. lifeB. liveC. livingD. lives （ ）7.A. something badB. bad somethingC. something goodD. good something （ ）8.A. leastB. bestC. mostD. worst （ ）9.A. put onB. look atC. put awayD. look up（

10、）10A. suiteB. suchC. veryD. so 拓展練習(xí)1. Its said that_ of the water around the world_ polluted.A. two third, has B.two thirds, haveC. two third, are D. two thirds, is2. The fire last night destroyed many buildings. _, no one was killed.A. Actually B. Simply C. Luckily D. Immediately3.Air must _ fresh

11、all the time. Its good for our health.A. keep B. is keot C. be kept D. keepTask I Make a dialogue about the seven continents( names, features, climate.)Task 2 Make a personal report to descibethe situation of the earth.HOMEWORK1. Share with your partner about what you feel after learning.2. Finish the exercise.3. Dscribe one planet you are interested in in your exercise book.