一句话中的as理解InthepastfewmonthsanumberofexecutiveshavecommentedonwhattheyseeasatougheroperatingenvironmentforforeignbusinessinChina.as后引导的是什么从句,表示什么?

Question

一句话中的as理解
In the past few months a number of executives have commented on what they see as a tougher operating environment for foreign business in China.as后引导的是什么从句,表示什么?

Answer 1

In the past few months 时间状语
a number of executives 主语
have commented on 谓语
what they see 宾语从句
as a tougher.同位语部分/补充说明（补语）
这里what they see 后面就不能再跟宾语了,这里as引导的短语,我不确定是什么,但我更倾向于把它看成一个同位语成分,或者是补语.
这里如果你把what they see as 这句去掉,实际上as后面的句子就是宾语部分了,因此,可以考虑是as前后部分有一种替代关系.