主语从句中it做形式主语的常见句型答:It + be + 名词词组 + 主语从句,这类名词有:a fact, a pity, a shame, an honour,a question. It + be + 过去分词+ 主语从句,这类过去分词有:announced, believed, expected, hoped, decided, reported, said, shown等, It + be + 形容词+主语从句 It + 不及物动词(seem, appear, happen等) +...