at the drop of the hat的用法和樣例：
例句
- You want to see a doctor at once.
你必須馬上去看醫生。 - I was vaguely astride the only horse.
我象騰云駕霧似地跨在僅有的一匹馬上。 - He can sing any song at the drop of a hat.
他隨時(shí)能唱任何一首歌。 - The timetable is subject to change without notice.
本時(shí)刻表隨時(shí)可能改變，不另行通知。
詞匯搭配
- at the drop of the hat 馬上,很樂(lè )意地...
- at the drop of a hat 一發(fā)出信號(一碰)...
