because;because of辨识

二者都有"因为"之意，because作连词，后跟从句，是主句结果的直接原因或作以why开头问句的答语。如：

Because he was ill, he is not here today. 因为他病了，所以他今天不在这儿。

because of 是复合介词，后跟名词、代词或动名词，相当于名词词组。如：

The football match was put off because of the rain. 因为下雨，足球赛延期了。