精选优质文档-倾情为你奉上as 和which引导非限制性定语从句的区别1，as引导的非限制性定语从句，位置灵活，可以置于主句的句首、句中或句末；先行词不可是一个词，必须是整个主句或主句的部分内容；有“正如、像”等意思，表依据、评论（、态度、看法）等；如： This elephant is like a snake，as anybody can see像任何人都能看见那样，这头象像条蛇。He failed in the exam, as we had expected. Tom has passed the test, as everybody knows. 正如每个人所了解的那样，汤姆通过了考试。【比较：Bamboo is hollow，which makes it very light竹子是空的，这就使得它很轻。】常用以下谓语动词的主、被动语态：know, see, say, expect, imagine, hope, believe, announce, suggest, report, point out, 例：主动（做
