状语从句【考点1】时间状语从句时间状语从句的常见连词连词用法例 句when1. 意为“当时”, 从句的动词可用延续性动词，也可用非延续性动词2. 意为“这时”或“在那时”When I came into the room, he was writing a letter.I was walking along the street when suddenly Tom patted me on the shoulder .while1. 意为“在某一段时间里”，“在期间”；while引导的动作必须是持续性的2. 意为“然而”While it was raining, they went out.I stayed while he was away.All of us are working hard while he is sleeping.as1. 意为“一边.一边”，引导持续性动作，强调主句和从句的动作同时发生2. 意为“随着”He hurried home, look
