译林版九年级下册英语精品教学课件 Unit 4 Life in Mars 第3课时 Reading Ⅱ.pptVIP

1.To learn some language points in the text. 2.To be able to finish some exercises according to the text. Studying aims 1. By 2100, people might live on Mars. 2. Mars is becoming crowded and polluted. 3. Now, it takes months for a spacecraft to travel from earth to Mars. 4. People are not sure whether there would be eongh water of oxygen on Mars. T F T T Read and tell T or F: Revision earth 5.Mars has one-eighth the gravity of Earth. 6.People will have less space on Mars. 7.Students will go to school by spacecraft. 8.People might have to do housework by themselves. F F F F three-eighths more study in online school . don’t have to do Revision Answer the following questions about the life on Mars. 1.When will people move to the planet Mars? 2.Why will we leave our own planet Earth ? By the year 2100. Because Earth is becoming more and more crowded and polluted. Revision 3.How long does the spacecraft need to get to Mars at present ? 4.How long does the spacecraft need to get to Mars in the future ? What would food on Mars be like? It takes months. About 20 minutes. Food would probably be in the form of pills and would not be so tasty. Revision Fill in the blanks with proper words. Our own planet , earth , is becoming more and more ________ and _________. Hopefully, we can build a better world on _______ by the year 2100. At present , our spacecraft are too slow to carry large numbers of ____________ to Mars. By 2100, the __________might take only 20 minutes in spacecraft that travel at the speed of light. crowded polluted Mars passengers journey Revision Food on Mars would probably be in the _______ of pills and wound not be so ________ as that on the Earth. Gravity could be another problem for people on Mars. The gravity on Mars is only about______________ of that on the Earth . People on Mars have to wear special________ to prevent themselves from__________off into the space. form tasty three-eighths boots floating Revis