chance

as chance will have it

意：碰巧;不碰巧(表示运气和不运气，视上下文而定)
例，I'm going to London myself tomorrow night as chance will harre it, so maybe we can travel together.
碰巧我明晚要亲自去伦敦，所以也许我们可以一起走。
She went to see him, bit as chance would have it, he was out.
她去看他.可不巧他出去了

by any chance

用：此惯语有以下两种用法:
七主要用于有礼挽的、谨懊的问勺中
意：碰巧;看看;或许
例，Are you by arty chance the rtew teacher?
或许您就是新来的老师吧?
I was wandering if by any chance you could lend me five pounds?
不知道您能不能借给我5英镑?

②用于if后
意：万一;如果碰巧
例.What if by any chance they fail to came?
万一他们来不了怎么办?
If by any chance it should rain, you'll have to stay there.
万一天下雨，你就得呆在那儿。

by chance

用：这个短语中可以加pure一或sheer这样的形容词，表示“纯属偶然“十分意外地”、“简直没想到”。
意：意外地;偶然地;没想到
例，They met quite by chance甲
他们认识得很偶然。，
I met 3ohn by chance this morning.
没想到今天早上我遇到约翰了。

have not an earthly chance

意：没一点儿希望。完全没希望;对某事没一点儿主意、打算
例. He hasn't an earthly of passing the exam.
他根本没希望通过考试二
A: Will Carl win the prize?
卡尔能得奖吗?
B: hFo, he hasn't an earthly.
不能，他根本得不了!