as引导方式状语从句时,翻译成“按照”.I have changed it as you suggested.
as作关系代词引导非限制性定语从句时,位置灵活,可位于句首,句中,翻译成“正如...一样/正像...一样”在定语从句中做主语或宾语 .
As is well known to us all,Taiwan is a part of China.（as代Taiwan is a part of China做is well known 的主语）
Taiwan is a part of China,as is well known to us all.（as代Taiwan is a part of China做is well known 的主语）
Machine,as was expected,has stoped operating.(as代Machine has stoped operating做 was expected的主语）
Taiwan is a part of China,as we all know .（as代Taiwan is a part of China做 know 的宾语）