fails 是 fail 的第三人称单数

fail

KK [fel] /feɪl/

动词

1
失败、不成功
The negotiations failed after only two days of talks.
谈判才进行两天就失败了。
2
没能、未做到接不定词
He failed to mention that the apartment had no heating.
他没提到那间公寓没有暖气。
3
不及格、当掉
She failed the final exam and had to retake the course.
她期末考不及格，必须重修那门课。
4
让⋯失望、背弃
I feel like I've failed my family in some way.
我觉得自己在某方面让家人失望了。
5
故障、失灵
The brakes failed as the truck came down the hill.
卡车下坡时煞车失灵。
6
衰退、衰竭
His eyesight is failing, so he no longer drives at night.
他的视力日渐衰退，已经不在晚上开车了。
7
倒闭、破产
Several small banks failed during the financial crisis.
金融危机期间有好几家小银行倒闭。

1
失败、出糗口语
His attempt at baking a cake was a total fail.
他试著烤蛋糕，结果彻底失败。
2
不及格
Two fails on the same paper means you repeat the year.
同一科不及格两次就要重读一年。

1
必定、一定用于 without fail
She calls her grandmother every Sunday without fail.
她每个星期天一定打电话给奶奶。