The thief stole my purse and ran out of the shop _______ that day.
中文：那天小偷偷了我的钱包并迅速跑出了书店
apidly
fast和rapid虽然有时可以互换使用,但它们有差异,fast强调物体进行相对运动.
The winning car reached a speed of forty miles——much faster than any of its rivals.
获胜的那辆车的时速达到40英里——比它的任何竞争者要快得多.
Letters will cost a little more,but they will certainly travel faster.
寄信要多花一点钱,但无疑书信走得会快一些.
而rapid只表示运动着的物体或事物的本身状况,并不涉及单位时间内所越过的距离.如：rapid work,rapid current,rapid progress
It is a rapid river.
那是一条湍急的河.
quick修饰事情发生得快,占用的时间少,也不涉及速度.如：quick thinking,a quick temper
Roy acted quickly and drove the bus straight at the thieves.
罗伊的动作迅速,开着公共汽车直向小偷扑去.
本体应该是只强调其自身速度,并没有比较的含义,也没有注重时间少
