关于复句的问题

复合句（Complex Sentence）由一个主句（Principal Clause)和一个或一个以上的从句(Subordinate Clause)构成。
主句是全句的主体，通常可以独立存在；从句则是一个句子成分，不能独立存在。
从句不能单独成句，但它也有主语部分和谓语部分，就像一个句子一样。所不同在于，从句须由一个关联词（connective）引导。
复合句（The Complex Sentence）：句子中有一个或一个以上的从句，叫做复合句。复合句可分为：
1).定语从句（The Attributive Clause）；
2).状语从句（The Adverbial Clause）；
3).名词性从句（The Noun Clause）

只给你举几个例子吧！！！
一、 定语从句
He is the man who wants to see you.=He is the man.+ A man wants to see you.
He is the man who I saw in the park yesterday.=He is the man.+ I saw a man in the park yesterday.
二、 状语从句
Where I live there are plenty of trees.=I live there. +There are plenty of trees.
Wherever I am I will be thinking of you. I am everywhere.+I will be thinking of you.
三、 名词性从句
Everybody knows that money doesn't grow on trees. =Everybody knows something(that).+Money doesn't grow on trees.
Please go and find out when the train will arrive