是come to nothing:

失敗，終未實現

How sad that all his hard work should come to nothing.

他的所有辛勤勞動竟全部付諸東流，太讓人傷心了。

When I wanted his help he failed me.

當我需要他幫助時，他卻使我失望。

His courage failed him.

他失去了勇氣。

Our plan has failed.

我們的計劃失敗了。

He never fails to write to his mother every week.

他從來沒有忘記每週給母親寫信。

Last year the crops failed.

去年農作物歉收。