怎样区别同位语从句和宾语从句啊？

同位语从句与宾语从句区别很明显...
同位语从句是在名词后加上关系副词的，作进一步解释或叙述．
宾语从句是在没有宾语的前提下，加上关系副词，充当句子的宾语成分．
我来造个句子：
News came that Bush was criticized by his assistant.
News came 已经独立成句，而后面是补充说明News的
I wanted to tell you that Bush was criticized by his assistant.
I wanted to tell you sth. tell要求双宾语，所以缺一个宾语呀，that ...就充当宾语

宾语从句接在动词或者介词后面
同位语从句通常接在名词后面