表“原因”的词

Becauseof  因为，介词短语，后加名词、代词、动名词或what引导的从句

The football match was put off because of the rain.

Because  因为，连词，引导原因状语从句

The football match was put off because it  rained.

Due to  由于，作表语，一般不用于句首

 Mostof the problems were due to human error.

 大多数问题都是人为错误造成的。

Owing to 由于，作表语或状语

 Owing to a lack of funds, the project will not continue.

 由于缺乏资金，该项目明年将停止进行。