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1、Life on Mars教学过程一、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。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。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 pilot s license when he was 16.=Neil Arm
2、strong received his student pilot s 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,
3、 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 su
4、re that space travel will be veryfast?=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 142000000 英里。4. circle around 围绕 / 环绕It takes Mars about two Earth years to circle around the Sun once.
5、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.关于那点，我们的意见致。6. be aware that.意识至U。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 yo
6、u might se e 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 doesn t know. Did Lucy pass the maths exam?（改为含有宾语从句的复合句 ）She doesn t know the math exam.【答案】if Luc
7、y 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。改为简单句）Are you aware how far Mars is away from the Sun? (Are you aware of
8、the distance between Mars and the Sun. 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 Earth s serious pollution.【解析】because引导的原因状语。从句可以改成because of引导的简单句，注意 because of后接名词短语。课程小结本节课主要学习三大复合从句如何改为介词引导的简单句，注意介词的选择要符合句意及固定搭配
