1、高考英语二轮专项复习-常见易混句型辨析高考中有这么一道单项选择题: isknowntoeverybody,themoontravelsroundtheearthonceeverymonth. A.It B. As C.That D.What此题的答案为B,as在这引导一个非限制性定语从句,修饰后面这句内容。但有学生不明白为什么不选A或D。这就说明他们对一些句型结构分辨不清,我们把题目做以下变化:(1) isknowntoeverybodythatthemoontravelsroundtheearthonceeve