求教OG12 SC33 31 ~~~3月23日，31问还是不明白。。到底怎样才算是冗余的？~~

AnnieFFish

和上面的同学握个抓 我也是刚刚看完RON的解释
我觉得这两句话已经足够帮助我们解决问题了：
if replacing "due to" with "caused by" creates a workable sentence, then "due to" is correct.
if replacing "due to" with "because of" creates a workable sentence, then "due to" is incorrect.

关于which的指代，前面有个楼说的好好好清楚
which真的不可以指代句子的，这里贴一个曼哈顿SC书里面的话：
【Use WHICH only to refer to nouns----never to refer to an entire clause.】