Margarine is regarded as decidedly"common"by the middle and upper classes,who use butter.
问题描述：
Margarine is regarded as decidedly"common"by the middle and upper classes,who use butter.
分析下句法 AS有什么用?
答
be regarded as..+n.名词
被当作...被认为是...
原句意思是
中上层的人认为人造黄油是一种很普通的黄油