定:限定 定语：限定定语的范围，对定语做进一步的说明限定
a yellow car // 定语就是限定名词或者代词进行限定. 如： 黄色的车 表是黄的 不是 红的、白的......
// 黄色的车 不是其他颜色的
// 对比 a car 是泛指： 并没有说明什么类型、什么颜色、几个轮子等的车
// 定语一般放在名词的前面 特殊的词 放在名词和形容词的后面
// 一般什么情况下用定语从句：找不到 对应的 形容词来限定时候 就用相应的定语从句
He who plays with fire gets hurt. // 玩火者自焚 没有 玩火的 对应的 单个形容词
定语从句是后置的.
He who plays with fire gets hurt.
先行词 关系代词(不能删除,删除会有两个谓语动词，不符合语法) 定语从句
关系词：代表先行在从句的成分：主语、宾语、表语、或者不做任何成分
限制性和非限制性定语从句: 用逗号断开, 不能用that修饰
限制性定语从句: 限制程度强,删除句子不成立，整个从句不可或缺的部分
非限制性：限制程度弱，在整个句子是次要信息，是一种补充说明,整个从句删除句子照样成立
Jack, who is an engineer, won the first prize.(从句是次要信息)//Jack won the first prize.
You drove too fast, which(代替前面整个句意) was dangerou.
Ace has released 8 courses, most of them were made after he graduation from college.
三种修改三种方式
Ace has released 8 courses.(句号) Most of them were made after he graduation from college.
Ace has released 8 courses and most of them were made after he graduation from college.
Ace has released 8 courses, most of which were made after he graduation from college.
something that probally make you surprise
Something that might make surprise you.
Those who laugh last laugh best. // 没有 笑到最后的 形容词