To learn Chinese is difficult for a foreigner.改为用it作形式主语的句子

问题描述:

To learn Chinese is difficult for a foreigner.改为用it作形式主语的句子

It is difficult for a foreigner to learn Chinese.
It做形式主语,to do 做真实主语的形式就是 it is + adj.+ (for sb) + to do sth.
很简单的.