例句: When they heard the news, they immediately set off for Shanghai. =Hearing the news, they immediately set off for Shanghai. 在含有状语从句的主从复句中,可将状从转化为分词的形式,具体步骤如下: 步骤一:去掉连词,但除特别强调外不可去或表让步转折如 unless, though, although 等不 可去。(注意:before, af