on fire着火,失火
on foot步行,徒步
on guard站岗,提防
on holiday在度假,在休假
on one's own独立地,独自
on one' s way home在某人回家的路上
on one' s way to.在某人去的路上
on the way to.在去的路上
on purpose故意
on sale出售,减价
at one time以前,曾经
at the same time同时
at times有时,时不时
at birth出生
at breakfast早餐时
at lunch午餐时
at dinner/ supper晚餐时
at college在大学
at home在家
at school在学校,在求学
at work在工作
at table在用餐
at dawn黎明时
by accident偶然
by bike骑自行车
by bus乘公共汽车
by car坐小车
by plane坐飞机
by subway乘坐地铁
by train乘火车
by mistake错误地,无意中
by the light of借助…的光
by the side of在……的旁边/附近
by the way顺便说一下,顺便问一下
by weight按重量
in control of管理,控制
In common共有,共同
in danger处于危险中
in need在危难中,在危急中
in need of需要
in trouble处于困境或苦恼中
in debt欠债,欠账
in detail详细地
in doubt怀疑,不肯定
in fact事实上
in reality事实上,实际上
in fear害怕
in force生效,有效
out of breath气喘吁吁
out of business失业,破产
out of condition身体不佳
out of control不受控制
out of danger脱离危险
out of date过时
out of fashion不流行,过时
out of debt不欠债
out of mind发狂
out of order出故障
out of question毫无疑问
out of sight看不到
all in all总而言之,总之
all of a sudden突然
all over the world全世界
because of因为
except for除之外
first of all首先
from door to door挨家挨户地
from time to time不时地
instead of代替
next to紧挨着
of course当然
of one' sown属于某人自 己的
off duty下班
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