表示原因的从属连词有:as , as long as , so long as , because , by reason that , by the means that , considering that , 'cos , for as much as , for fear that, for that , for the reason that , inasmuch as , in that , not that ... but that , now that , on the ground that , seeing that , since , that , the rather that , when (摘自赵俊英:《现代英语语法》p.787)
还有: seeing as
除网友提到的有 because, since, as, now that 外,还有些 for, seeing that, seeing as, in that等。例如:
Something fell in, for I heard a splash. 有东西掉进去了,因我听见扑通一声。
We may as well go to the concert, seeing as we've already paid for the tickets. 既然我们已经买了票,最好还是去听音乐会吧。
Seeing that he's been off sick all week he's unlikely to come. 他请病假整整一周了,所以今天也不大可能来。
In that he did not come to work yesterday, he showed that he is not very interested. 因为他昨天没有来工作,他表明了他不很感兴趣。