说“自从”

“自从”多领起小句或动词性结构，在句中行使着一定的篇章功能。句子“自从A（小句状态），B”中A事件与B事件之间可能只表示时间的先后，但更多地体现出因果关联。宽式结构及相应的句式更利于凸显事件的前因后果。

＂Since＂ in chinese relates sentence or verb - object word group in most cases, and acts as conjunctive word. The two events in the compound sentence consist of the relation of before and after, in addition, Cause - and - effect relationship also consists in most of them. Broad structure and corresponding patterns make for standing out causality.