摘要：2．As引导的非限制性定语从句的位置 as引导的非限制性定语从句位置较灵活.可以位于主句前面．中间或后面.一般用逗号与主句隔开.但which所引导的非限制性定语从句只能放在主句之后.例如: (1) As is expected, the England team won the football match. (2) The earth runs around the sun, as is known by everyone.

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