课型描述 这是一节语法复习课。定语从句是整个高中语法学习的重点和难点，高三学生虽然在高一和高二学习了定语从句，但是还是迷糊不清。因此，在高三的复习课中，必须把学生疑惑的地方解决。定语从句的复习课计划两节课，第一节复习要点，第二节讲评练习。这是第一节要点复习课。
教学目标 1.让学生明白定语从句的关系词的用法及如何选择正确的关系词；
2.让学生清楚定语从句与同位语从句及其他句型的区别。
教学重点 1.定语从句的关系代词as的用法；
2. 介词+which中介词的选择；
3.定语从句与同位语从句及其他句型的区别。
教学难点 介词+which, as的用法。
教学方法 归纳法
教学手段 电子白板
教学过程
Step 1 复习有关定语从句的概念及关系词。
第一步：在白板上打出这两句话：
This is a beautiful house.
This is a house which is beautiful.
先把这两句话翻译为中文，中文意思一样。第一句beautiful在句中作定语，修饰house；第二句which is very beautiful也是修饰house作定语。二者之间有什么不同呢？一个用单个形容词修饰，一个用定语从句修饰。
第二步：让学生回忆有关定语从句的概念。
定语：在简单句中修饰名词、代词的词或短语的词。
定语从句：在主从复合句中作定语的从句。定语从句分限制性定语从句和非限制性定语从句。
先行词：被定语从句所修饰的成分。在这句是house.
关系词：连接定语从句的连词，分关系代词和关系副词。在这是which.
第三步：让学生回忆有关定语从句的关系词。
关系词的分类：
关系代词：指人: who (主语或宾语) whom（宾语） whose （定语）
指人和物： that （主语或宾语）as（主语或宾语）
指物：which（主语或宾语）
关系副词：when (表时间) where (表地点) why (表原因) 作状语。
Step2 如何选择关系词。
第一步：在白板上打出这三道题：选择正确的关系词填空。
1． This is the house (that/which) I visited last year.
2． This is the house where I lived.
3． This is the house whose windows face to the south.
（问）为什么三个句子使用了不同的关系词？
（学生答）因为它们在定语从句中承担不同的作用.第一个句子中的that/which在从句中充当宾语, 第二个句子中的where在从句中充当状语, 第一个句子中的whose在从句中充当定语.
第二步：让学生归纳关系词的作用。
接着老师总结关系词的作用：
1.连接作用：连接主从复合句；
2.替代作用：在从句中替代前面的先行词；
3.成分作用：在从句中作成分，作主语，宾语，定语或状语。
第三步：让学生总结如何选择关系词。
解题方法： 还原法 ---即把先行词还原回到定语从句中，观察先行词在定语从句中做什么成分.
一找：要找出先行词和关系词；
二看：看关系词在从句中的语法功能：做主语，宾语，定语或状语。
三选：选择合适的关系词。
做练习巩固。
单项选择
1. This is the job __A____they laughed at.
A.which B.as C.it D.who
2. Beihai Park is a beautiful park___C___built about 300 years ago.
A.where was B.that were C.which was D.where
3. Who was the grey-haired man __B____at yesterday’s meeting?
A.we saw him B.we saw C.we saw who D.she was seen
4. The man __D____is painting the house is my uncle.
A.he B.whom C.whose D.who
5. What is the animal __B____baby is sleeping in its pocket?
A.who B.whose C.its D. which
6.The fox __D____ the chickens were killed was shot.
A. that B. which C. for that D. by which
7.Yesterday they saw the man and the dog _C____ran after each other on the road.
A. who B. which C. that D. as
Step3 定语从句的难点：
难点1.as的用法
第一步：做单项选择题。
1.He is such a good teacher _C___ every student loves.
2.It is so heavy a stone _C___ no one can.lift
3.__C__ is known to all, light travels faster than sound.
4.He is very careful, __C__ is shown in his work.
A. that B. who C. as D. which
第一题；选C，因为先行词有such修饰。与such...that比较，He is such a good teacher that every student loves him.
第二题：选C，因为先行词有so修饰。与so...that比较, It is so heavy a stone that no one can lift it。
第三题：选C，非限制性定语从句，as指代整个主句的内容，放句首。
第三题：选C，非限制性定语从句，as指代整个主句的内容，从句用被动语态。
总结as的用法
1. as引导定语从句在从句中做主语或宾语
2.引导限制性定语从句: 当先行词被the same；such ;so; as修饰时用as
3.引导非限制性定语从句: as\which 经常可以互换，但下列情况多用as。
a. 关系代词引导的定语从句居句首或句中时。
e.g. As we all know, the earth is round.
b. as在从句中作主语时，后面常接行为动词的被动语态，如be known，be said，be reported等，如从句中行为动词是主动语态，用which作主语。
e.g. She has been late again, as was expected.
Tom has made great progress, which made us happy
难点2：介词+which\whom中介词的选择。
第一步：做填空题。
1.1988 was the year in__ which he was born.
2.Is that the newspaper _for_ which you often write articles?
3.This is the hero _of_ whom we are proud
第二步：学生分组讨论如何选择介词。
第三步：找代表总结如何选择介词：
1.先行词与介词的习惯搭配：
2.从句中动词或形容词与先行词的习惯搭配。
练习巩固。
1. The farm __on__ which I once worked has taken on a new look.
2.Is this the house __in_ which Shakespeare was born?
3.In the dark street there wasn't a single person __to whom she could turn for help.
4.The clever boy made a hole in the wall,_through which he could see what was going on inside the house.
5. This is the teacher from_whom we have learned a lot.
难点3.几个特殊名词后定语从句的连词。
a. way
1. I don’t know the way in which\that\省略 he worked out the problem.
2. The way which\that\省略 he explained is difficult.。
当先行词是way，要判断关系词在从句中作什么成分，作状语，in which\that\不填；作主语或宾语，that\which.
b. case /situation /point/condition/place/position
3. We’re trying to reach a point where both sides will sit down together and talk.
4. I think you have understood the point which\that\省略_ he referred to in his speech.
5. He’s got himself into a dangerous situation where he is likely to lose control over the plane.
6.Today, we’ll discuss a number of cases _where_ beginners of English fail to use the language properly. (07陕西)
7.There are many cases that\which were mentioned in the book.
当先行词是这些词case /situation /point/condition/place/position，要判断关系词在从句中作什么成分，作状语，where\介词+which；作主语或宾语，that\which.
难点４.区别定语从句与其他句型。
1.定语从句与同位语从句的区别
Exercises:单项选择
1. We all have heard the news__A___ our team won.
2. We don’t believe the news __B____he told us yesterday.
3. I still remember the day __C__ I first came to Beijing.
4. Then arouse the question _C___ we were to get the money.
A. that B. which C. when D.what
先让学生总结第1题与第二题，第三题与第四题的相同与不同之处。然后，再是教师总结定语从句与同位语从句的区别。
a.定义：定语从句是对前面的名词起修饰的作用；
同位语从句是对前面的名词起解释的作用，可将同位语从句转换为表语从句：
the +n. is +从句
b.连词的区别：
that引导定语从句并在从句中作主语或宾语（可省略）；引导同位语从句在从句中不做任何成分，不可省略。
When,where引导定语从句的意义与先行词基本相同；而引导同位语从句的意义分别是“什么时候”，“哪儿”。
2.定语从句与其他名词性从句的区别。
（1）The place _C___ the bridge is supposed to be built should be_____ the cross-river traffic is the heaviest. （05 江苏）
A. which; where B. at which; which C. at which; where D. which; in which
（2）A._C__ is reported, talks between the two countries are making progress.
B. It is reported _A__ talks between the two countries are making progress.
C. _B__ is reported is that talks between the two countries are making progress.
A. that B. what C. a(A)s D.which
3.定语从句与状语从句的区别：
A. He is such a lazy man _D__ nobody wants to work with.
B. He is such a lazy man _A__ nobody wants to work with him.
A. that B. who C. whom D. as
4.定语从句与强调句的区别：
A. It is the place B___ he was born.
B. It is in the place _A__ he was born.
A. that B. where C. which D. what
5.定语从句与简单句的区别
A. I have some friends, some of _B__ are docters .
B. I have some friends, and some of C___ are docters .
A. who B. whom C. them D. that
最后这四组题型，先让学生选出正确的答案，然后小组讨论，比较相同与不同之处。
Homework: 2011年高考定语从句的考题。
教后反思：作为语法复习课，此教案重点难点突出，有讲有练，选题典型，重在学生参与，方法简单易于掌握。