译林牛津版9下 Unit 4 Integrated Skills 教学课件 (共29张PPT)

Complete the sentences. 1. Earth is becoming more and more ________ (crowd). 2. Every year, large numbers of tourists _____ (come) to visit Beijing. 3. There will be no ________ (pollute) on Mars. 4. The news made her ____ (feel) sad. 5. ________ (science)are working hard to make the dream become true. come pollution crowded Scientists feel Earth Mars a better world … crowded polluted * T: Or we may say: It’s crowded and polluted. /// T: What shall we do then? /// (PPT) T: Some scientists say there is a better world for us — Mars. Do you know Mars? T: And before we start to learn the article about Mars, let’s look at these new words. /// 1. carry out 开展，执行 e.g. No matter what difficulty you will meet with, carry out your plan.  不管你遇到什么困难，都要执行计划。 e.g. Percentage of students who would like to move away from the earth is 50%.  想要搬离地球的学生数的百分比是50%。 2. percentage n.百分数 e.g. The disadvantage of living on Mars。 住在火星的缺点。 3. disadva