4、nThesteamisseenrisingfromthewetclothes.起形容词、副词作用,表被动1.一般现在时(1)表示经常发生或习惯性的动作或状态eg.Weoften write to each other.我们时常相互通信。常与always,usually,often,sometimes,every day,once a week,yearly每年,monthly每月,等时间状语或频率副词连用。(2)表示主语现在的性格、特征、能力eg.Heworkshard.他努力工作(3)表示客观事实或普遍用法eg.Thesunrisesintheeast.Lightgoesfast