1、介词+名词
by accident 偶然
on account of 因为,由于
in addition 另外
in addition to 除......之外
in the air 在流行中,在传播中
on (the/an) average 平均,一般来说
on the basis of 根据,在......的基础上
at (the) best 充其量,至多
for the better 好转,改善
on board 在船(车、飞机)上
out of breath 喘不过气来
on business 因公,因事
in any case 无论如何,总之
in case of 假使,万一
in case 假使,以防(万一)免得
in no case 决不
by chance 偶然,碰巧
in charge (of) 负责,主管
(a) round the clock 昼夜不集地
in common 共用,共有,共同
in conclusion 最后,总之
on cond0ition that 在......条件下
in confidence 信任
in connection with/to 关于
in consequence 因此,结果
in consequence of 由于......的缘故
on the contrary 反之,正相反
in contrast with/to 与......成对照
out of control 失去控制
under control 被控制住
at all costs 不惜任何代价
at the cost of 以......为代价
in the course of 在...过程中,在...期间
of course 当然,自然
in danger 在危险中,垂危
out of danger 脱离危险
out of date 过期(时)的
up to date 时新的
in debt 欠债
in debt 欠债
in detail 详细地
in difficulties 处境困难
in the distance 在远处
off duty 下班
on duty 值班,上班
on earth 究竟,到底
at all events 无论如何
in any event 有效;实际上
in the event of 万一,如果发生
for example 例如