定语从句:是修饰名词或代词的句子.(放在名词或代词的后面）
如：Tom is a boy who likes singing.
There is something that I like best.
宾语补足语:相当于汉语的兼语式.
如：We made him (our manager).
We must try our best to make our country (rich and strong.)
I saw him( playing) on the playground just now.
We left the door (open .)