【www.fsgl168.com--合同范本】
第139期
（每周六、日推送）
as is known to all 是一个着名的句型，表示“众所周知”，比如：As is known to all, China has a long history,众所周知，中国有着悠久的历史。在这句中，as 是关系代词，其作用相当于 which，是用来代替后面整个主句（China has a long history），而不是某个先行词。as 引导的这个从句属于“非限定性定语从句”，位置可前可后。再如：He is acknowledgeable, which was mentioned before. 他很博学，这一点以前已提过。也可以改写成：He is acknowledgeable, as was mentioned before.最后注意一点，as 引导的这种非限定性定语从句可以放在句首的，而 which 引导的从句不能放到句首，比如：As is usual around the world, everyone loves beauty.爱美之心人皆有之，这一点举世皆知。不能说：Which is usual around the world, everyone loves beauty. (误)但可以说：Everyone loves beauty, which/as is usual around the world.学会了点个赞。
