天津学大教育信息咨询有限公司九年级英语下册-Unit-4-Life-on-Mars语法教案-(新版)牛津版

知识点1. 状语从句与简单句的互换2. 宾语从句与简单句的互换3. 限制性定语从句与简单句的互换教学目标掌握状语从句、宾语从句、定语从句如何转换为简单句。教学重点状语从句转换为简单句。教学难点限制性定语从句转换为简单句。Life on Mars教学过程1、 课堂导入通过讨论让学生回忆所学的三大从句，并指出如何区别这三大从句。二、复习预习复习上节课所学重点单词、短语、句型，讲解课后习题。三、知识讲解考点1：状语从句与介词短语引导的简单句的互换1. Neil Armstrong received his student pilots license when he was 16.= Neil Armstrong received his student pilots license at the age of 16. 注：when引导的时间状语从句可以改成at the age of引导的简单句。2. People might float in space because the gravity is low. = People might float in space because of the low gravity.注：because引导的原因状语从句可以改成because of引导的简单句。3. Humans cannot survive if there is no food, water or oxygen.= Humans cannot survive without food, water or oxygen.注：if引导的条件状语从句可以改成without引导的简单句。考点2：宾语从句与介词引导的简单句的互换1. The smell of the pills reminds them that food on the Earth is tasty.= The smell of the pills reminds them of the tasty food on the Earth.注：that引导的宾语从句可以改成of引导的简单句。2. Are they sure that space travel will be very fast?= Are they sure about the fast speed of space travel?注：that引导的宾语从句可以改成about引导的简单句。3. away from.远离，离开。Mars is about 142,000,000 miles away from the Sun. 火星距离太阳约英里。4. circle around 围绕 / 环绕It takes Mars about two Earth years to circle around the Sun once. 火星围着太阳转一圈大约要花费两年的时间。5. in agreement that .同意。We are in agreement on that point. 关于那一点，我们的意见一致。6. be aware that. 意识到。考点2: 限制性定语从句与介词引导的简单句的互换1. People might live in houses which have huge comfortable rooms.= People might live in houses with huge comfortable rooms.注：which引导的定语从句可以改成with引导的简单句。2. On Mars you might see people who wear special boots.= On Mars you might see people in special boots.注：who引导的定语从句可以改成in引导的简单句。3. be similar to与。相似4. much thinner air 更加稀薄的空气5. hear from.收到。的来信四、例题精析【例题1】【题干】She doesnt know. Did Lucy pass the maths exam?(改为含有宾语从句的复合句)She doesnt know _ _ _ the math exam.【答案】if Lucy passed【解析】宾语从句要用陈述句语气，本题要用过去时态。【例题2】【题干】If there is no fresh food, meals will not be as tasty as they are today. (改为简单句)_.【答案】Meals will not be as tasty as they are today without fresh food.【解析】If引导的条件状语从句可以改成介词引导的简单句，注意介词的选择。【例题3】【题干】Are you aware how far Mars is away from the Sun? (改为简单句）_.【答案】Are you aware of the distance between Mars and the Sun.【解析】宾语从句可以改成介词引导的简单句，注意介词的选用要符合固定搭配。【例题4】【题干】Humans are thinking about moving to another planet because the pollution on the Earth is very serious. (改为简单句)_.【答案】Humans are thinking about moving to another planet because of the Earths ser