英文表原因和理由的几个连词的差异

Dissimilarities Between Some English Conjunctions Expressing Cause and Reason

英语语言中表示原因或理由的连词有since，as，for，because，seeingthat，nowthat等。它们虽数量不多，但不容易掌握。本文试从三个方面探讨它们之间的异同。

In the English Language, the Conjunctions 'since, as, for, because, seeing that, now thatn are used to express cause and reason. Though only a few,they are not easy to master. In the paper,we try to centre our discussion on some similarities and dissimilarities among them in three aspects.