2. ______ is reported in the newspapers, talks between the two countries are making progress. A. It B. As C. That D. What（正确答案是B，为什么不是A，不是形式主语吗）
热心网友
强调句型是：It is/was ...that... 强调句为：It was reported in the newspapers that talks between the two countries are making progress.强调部分是in the newspapers 意思是：正如报纸上所说的那样，这两国的谈话正在取得进展。As引导非限制性定语从句，表正如...一样。可置于句首或尾，也可句中。类似词有：as is konwn to all as we had expected等。
热心网友
as 引导非限制性定语从句，代替整个后面句子还可以表原因
热心网友
2. ______ is reported in the newspapers, talks between the two countries are making progress. A. It B. As C. That D. What答案是B.没有问题。as 引导非限制性定语从句，代替整个后面句子，译成正如报纸上报道的...as is known to us, Taiwan belongs to China.要是做形式主语的话，句型是it is reported that ...it代替整个从句，后面的从句必须有连词或者疑问代词It is known to us that Taiwan belongs to China. It has not been decided whether we will accept his advice.
热心网友
It is reported in the newspapers that talks between the two countries are making progress. 这样才对，形式主语中it代后面的talks between the two countries are making progress
热心网友
as这里做“正如”讲如果说it是形式主语的话 ","应该改为that否则是两个句子用逗号隔开