becauseof意思

because of是复合介词，意思是因为，由于（说明）。

because of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）。当主语是代词时，because of短语在句中可用作表语。

例句

His school work is suffering because of family problems.

由于家庭问题，他的学业日渐退步。

Two players are out of the team because of injury.

两名队员因伤退出了比赛。

No payments were made last week because of a computer error.

由于计算机出错，上周未付任何款项