八年級英語下冊 Unit 7 Lesson 38 The World Is a Big Place課件 （新版）冀教版

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 PLACE冀教版八年級下冊冀教版八年級下冊VOCABULARY billionbiljn n. Ten thousand.十億；千兆 total tutl n. The whole number. 總計(jì);總數(shù) adj. Of the whole number. 總計(jì)的;總的 Indianndn adj. 印度的； n. 印度人planet plnitArctic :ktikAtlantictlntiksurface s:fis increase inkri:s, inkri:s TASK-BASED READING1. What are problems 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 land?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 TREATED WELL Once the world _ green plants and the living things led a peaceful life_. However, later some animals_ and was even killed for their 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 before _.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 it.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 still 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, there 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 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. 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 good D. good something （ ）8.A. least B. bestC. mostD. worst （ ）9.A. put on B. look atC. put awayD. look up（ ）10A. suiteB. suchC. veryD. so Task I Make a dialogue about the seven continents( names, features, climate.)Task 2 Make a personal report to descibethe situation of the earth.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 all the time. Its good for our health.A. keep B. is keot C. be kept D. keepHOMEWORK 1. Share with your partner about how you feel after learning.2. Finish the exercise.3. Describe one planet you are interested in in your exercise book.