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英語介詞習語歸納（on類）

on account of由于                                     on any account 無論如何

on no account 決不                                   on this account 由于這個原因

on the advance (物價)在上漲                     on (an) average平均，按平均算

on (the) average 平均, 按平均算                on behalf of代表(某人)

on board在船上                                        on business出差，辦事

on condition that 如果                               on no condition 絕不要

on this condition 在此條件下                     on credit賒購

on demand在要求支付時                           on display展出

on duty值班                                              on earth 在世上，究竟

on exhibition 展出                                      on fire著火了

on foot步行(去)                                         on good terms 和睦

on guard有警惕                                          on hand 在手頭，即將發生

on holiday 休假                                           on leave 休假

on no account絕不                                     on one's own獨立地

on purpose故意地                                       on sale在出售

on strike在罷工                                          on the contrary相反

on the(tele)phone 在打電話                         on the point of正要

on the way 在路上                                     on time準時

on top of在……上面                                   on the whole 大體上, 基本上