It作形式主语主要包括以下几种类型和搭配关系: 1)It + be + adj. + 从句 It was obvious that the driver could not control his car. 2)It + be + n. + 从句 It is a pity that he missed the lecture. 3)It + be + 过去分词 + 从句 It is said that they have won the game. 4)It + be + vi. + 从句 It seems that something is wrong with the computer. 【查看更多】
