【www.shanpow.com--高中作文】
2. Two boys need two pens. 数词作定语
3. His son needs Tom"s pen. 形容词性物主代词或名词所有格作定语
4. The boy in blue is Tom. 介词短语作定语
5.There is a woman doctor. 名词作定语
6. The boy there needs a bike. 副词作定语
7.There is nothing to do today. 不定式作定语
8. The smiling boy needs a friend. 现在分词作定语
9. A boy called Tom saved the girl. 过去分词(短语)作定语
10. He is the man that I met yesterday. 定语从句
一、定语从句的概念：在复合句中，用作定语的从句叫做定语从句。
二、定语从句的位置：通常位于它所修饰的名词或代词之后。
三、被修饰的名词或代词叫做先行词。
四、引导定语从句的关联词为关系代词和关系副词。关系代词(who, whom, whose, that, which等)在定语从句中可用作主语、定语、宾语等;关系副词(when, where, why等)在定语从句中只用作状语。关系代词和关系副词放在先行词及定语从句之间起连接作用，同时又作定语从句的重要成分。
五、定从基本形式：先行词(名词/代词) + 关系代词/关系副词+ 定从
六、that引导的定语从句
She is the girl that talked to you yesterday. (that作主语)
The coat (that) I put on the desk is blue. (that作宾语)
结论：that引导的定语从句既可以修饰人，也可以修饰物;
that在从句中作主语或宾语;
作主语时不可省略，作宾语可省略。
例如：
1. I like music. I can dance to music.
I like music that I can dance to. (that在从句中用作宾语。)
2. I prefer a sandwich. A sandwich is really delicious.
I prefer a sandwich that is really delicious.(that在从句中用作主语。)
注意：that在定语从句中作主语时，定语从句中谓语动词的单复数应与先行词保持一致.
例如：I prefer movies that are scary.
I like a sandwich that is really delicious.
I love the singer that is beautiful.
I have a friend that plays sports.
