up·on
【词性】:prep. 【释义】: 在…上(upon 与on可互用,通常用on,但下列情况宜用 upon):1)同句尾的不定式连用:There are many chairs to sit upon.有许多椅子可以坐.In the old society the workers had little to live upon.在旧社会工人靠微薄的收入生活.2)用于某些词组中:thousands upon thousands of people成千上万的人.upon my word我保证,真的,千真万确.depend upon it的确.once upon a time从前. |