冀教版（三起）英语八年级下册 Lesson 38 The World is a Big Place（课件）

这是一份冀教版（三起）英语八年级下册 Lesson 38 The World is a Big Place（课件），共26页。

Unit7 Know Our Worldmountainsriversdesertsglaciers. Lesson 38: The World Is a Big Place!The earth is a very special planet. It is big and beautiful. But it faces many problems.7 billion in totalOne problemThe population is increasing very quickly.Another problem ?Can we live anywhere on the earth?People can’t live everywhere on the earth. Only one third of our planet is land. Oceans cover two thirds of the earth’ surface.one third 三分之一two thirds 三分之二 分子基数词，分母序数词，分子大于一，分子加s。For example one fourth 四分之一 two fourths 四分之二Exercises1.One fourth of the students ________(be) from the countryside.2. Two fifths of the water ___(be) clean.areisHow many continents are there in the world? What are they? North AmericaSouth AmericaEuropeAfricaAsiaAustraliaAntarctica Antarctica is covered with snow and ice all year roundLuckily,people can live on the other six continentsthe  Arctic Ocean the Pacific Ocean  the Atlantic Ocean the Indian OceanWhich ocean is the largest one?The earth is our home,and it will be our home in the future. It must be treated well for our children and for our children’ children,too.1.These dry places are called deserts.2.Antarctica is covered with snow and ice all year round.3.It must be treated well for our children and for our children’s children,too. be done 被动语态1.They make shoes in that factory.主语+ 谓语 +宾语Shoes are made (by them) in that factory.一般现在时：变为被动语态主语+am/is /are +done2. They bought ten computers last term． Ten computers were bought (by them) last term.一般过去时：主语+was/were +done3.They will finish the work in ten days.The work will be finished (by them)in ten days.一般将来时：主语+ will+be+doneLet’s Do It!Read the lesson and match each paragraph with its main idea.Paragraph1a. Six of the seven continents are good for people to live on.Paragraph2b. We should treat the earth well.Paragraph3c. An increasing population is a big problem for the earth.Paragraph4d. Two thirds of the earth is covered with oceans.Paragraph5e. People cannot live everywhere on the earth.pollutionsThe increasing populationAs a student, what should we do?We should pick them up and put them into the dustbin.We should turn off the taps when we don’t use them.Let’s take actions together to make our school more and more beautiful.Let’s protect our home together.Homework1. Share with your partner about what you feel after learning.2. Finish the exercise.