哪些句子需要写成定语从句的形式?

问题描述:

哪些句子需要写成定语从句的形式?
我们书上出现过很多有用who,where,that代指前面先行词,我看得出是定语从句,但我不知道哪些句子需要写成定语从句的形式.
例如:Miss Green is a strict but kind teacher who always cares for every student.
句子中的who不能替换成and
But people who are too stressed out and angry may have too much yang.
不能写成
But people are too stressed out and angry may have too much yang.

第一个可以用and she 换 who,但是第二个不行,因为 people (who are too stressed out and angry) may have too much yang, 主语是people,括号里的定语从句用来修饰people,may have 是谓语,too much yang 是宾语.括号...也就是说括号里的(who are too stressed out and angry) 可以理解为一个单独的句子,来修饰people这个先行词。那么哪些句子需要写成定语从句的形式呢?例如翻译句子:一些学生经常在课堂上睡觉可能经常学习到太晚。Some student who always sleep in class may often study too late.修饰名词的成分就叫定语,当这个修饰的部分需要是一个句子的时候就用到定语从句了呀。用不用取决于句子意思的需要。你上面举的这个例子很好啊。再举个例子:坐在你旁边的女孩是Jenny.The girl (who is sitting beside you) is Lily.括号里是定语从句。who 主语,is sitting 谓语你也可以说成 The girl is Lily. 那这个地方 sitting beside you 也是修饰 The girl 但是就不是定语从句了(因为不是一个句子),叫做后置定语。