It is no use doing sth. 做某事没用
It is no good doing sth. 做 某事没好处
It is fun doing sth. 做某事有趣
It is a fact that ... 事实是……
It is a pity/shame that . .. 可惜/遗憾的是……
It is a wonder that ... ……真是个奇迹
It is no wonder that ... 难怪……
It is said th at ... 据说……
It is rep orted that ... 据报道……
It is estimated that ... 据估计……
It is supposed that ... 据推测……
It is assumed that ... 假定……
It is hoped that ... 人们希望……
It is believed that ... 人们相信… …
It is suggested that ... 有人建议……
