fail
If you dont work hard, you may fail. 此句中fail意为失败;不及格,没有通过考试。fail还有其它用法。如:
① He never fails to write to his mother every week.
(fail意为忘记、忽视或未能做某事。)
② She has been failing in health.
(fail in意为(健康状况)衰退。)
③ His friends failed him when he most needed them.
(fail意为使失望, 辜负。)
④ I had three passes and one fail.
(fail用作名词,意为考试不及格。)
⑤ Ill be there at two oclock without fail.
(without fail意为肯定,一定,必定。)