請問because 同because of 兩者在英文運用上有什麼分別?

because = (連接詞) due to the fact that - 會跟verb一起用
e.g. I did it because he told me to.
e.g. It was because, he told me that he'd like to invite Susan for dinner, I reserved a table for two of them.

because of = (prep.) 為了...緣故 by reason of, due to, on account of, for - 不會跟verb一起用, 必有(,)分句
e.g. Because of the surgery, I have to quit smoking.
e.g. I haven't had enough rest because of playing (n.) tv game overnight.
e.g. They are here because of us.

2007-04-23 12:25:11 補充：
必有(,)分句 = 以前英文系有用(,), 但而家好少架喇

2007-04-24 16:57:42 補充：
e.g. Because of the surgery, I have to quit smoking.因為because of 放o向前面, 句子中間一定要有(,)

Because 同because of 都解因為

但because後面就會用動作, 事件
because of後面就會用名詞, 物件

E.g.
因為下雨, 我們留在家
We stayed home because it was raining.
OR
We stayed home because of the rain.