it做形式主语和as引导原因状语从句有什么区别? 例如1,-is generally accepted,the social status of women has been greatly improve nowadays.这个为什么填as,不用it-beingcold,we would rather stay at home this evening,这个天it不用AS
it做形式主语,可以代替that从句,不定式等,避免句子头重脚轻. 第一句,如果用it,后面要加个that. 如:It is generally accepted that the ... 第二句It being cold,表示伴随性状况,it指天气 as不能用没,因为as引导从句,being cold是非谓语动词,这里没有谓语动词,构不成从句. (不知道为啥,系统不让我通过,貌似没有什么词敏感吧,尝试再发一遍)