题目内容：

come to an end为什么要加an

优质解答

固定搭配.关于冠词的固定搭配,希望平时多积累,多背诵些.

追问：

可以举几个例子吗

追答：

例子很多的。如： all of a sudden ; put .... to an end ; at war ; lead .... a life ; have a cold/ cough/headache; have a gift for ; have a word with; once in a while ; at a loss; once upon a time ; in a hurry; as a matter of fact; offer sb. a lift ; be on a diet 等。 仅供参考，如被采纳，不胜荣幸！