你本来有机会，却没有抓住。

You had your chance and you blew it.

《牛津词典》

我们本来有机会赢得比赛的。

We could have won that game with the chances we had.

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“你本来有机会为这个片子签约雇佣演员，”帕姆说。

“You had your chance to sign on with this project, ” Pam said.

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and take a spot from somebody who might be more well-qualified.

这样就占用了许多名额，剥夺了那些本来有更高素质的学生的入学机会。

不平等的赞助入学 - SpeakingMax英语口语达人