1 用以引出比较的第二部分,如I am older than her.2 用以比较数量、距离等多于、少于、小于,如It never takes more than an hour.3 表示一件事紧跟着另一件事发生,常用短语:no soon …than 如No soon had I sat down than there was a loud knock on the door. 我刚坐下来就有人敲门 又hardly…than 如 Hardly had we arrived than the problem started.我们刚到问题就来了