as:during the time when;while,在…期间,在…时候(但总觉的用as时时间持续不长);while:1.during the time that;when在…期间,在…时候(好象持续时间比as长)2.at the same time as,与…同时(这是不是伴随时间状语从句啊?)
rabbitbug(兔八哥在准备T)
(#291507@0) Last Updated: 2001-12-9 This post has been archived. It cannot be replied.