because和because of的区别在于：词性不同。Because是连词，后接原因状语从句或对以why开头的问题的回答;because of是复合介词，后面跟名词、代词、动名词或者what引导的名词性从句。
because of和because的区别是什么
1、读音不同
because
读音：英[bkz] 美[bkz]
because of
读音：英[bkzv] 美[bkzv]/
2、含义不同
because
释义：conj.因为。
because of
释义：conj.因为，由于（说明）because of是复合介词，其后可接名词、代词、动名词或由what引导的从句（但不是直接接从句）。
3、用法不同
because
用法：because是从属连词，后接原因状语从句。
because of
用法：because of是个短语介词，不可以引导原因状语从句，而应该接名词，代词等。
because of和because的例句
She doesn't go to school because she is ill.
她没来上学因为她生病了。
The boy was always late because it took so long to get dressed.
这个男孩因花太长时间穿衣服总是迟到。
I can't do it now because I am busy.
因为我正忙着，现在不能做此事。
We should never look down upon a person because of what his parents have done.
我们不应该因为一个人的父母所做的事而看不起他本人。