because同because of有乜分別?

兩者都有「因為」ge意思。
because：後面要加一句完整ge sentance
eg：
He is absent because he is ill.

because of：後面只能加一個noun或noun phase
eg：
he didn't go there because of the storm.

We put a noun phrase or pronoun after ''because of''.
We put a simple sentense after ''because''.
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_20.gif

Because of 大多是跟 Noun Phrases

I was late for school because of traffic congestion.
The meeting was cancelled because of his poor health.

because of 後面通常跟 Noun名詞.

because 後面通常是一句完整句子.

because同because of的意思都係"因為"。