| 释义 |
upon[强ə'pɒn;弱əpən]prep.=on[upon和on在多数情况下可通用,但有下列区别:①表示日期时一般只用on,不用upon,如:on Sunday,on the fifth of April②在某些习语中,upon与on不能互相调换,如:upon my word,once upon a time,on no account,on time,on fire等 ③在句末或分句末的动词不定式后往往用upon,而不用on,如:nothing to depend upon,not enough to live upon④upon比on正式,口语中多用on] |