He hands in his assignment every week without fail.他每周都按时交作业。
Grammar Point fail / failurefail / failureThis use of fail as a noun instead of failure in a sense that does not just apply to exams has become more common in informal language in the 21st century. A similar case is revealfail 取代 failure 用作名词不只限于描述考试,这种用法在 21 世纪的非正式用语中已经越来越普遍。类似的情况还有 reveal:
We have to wait for the final chapter for the big reveal.我们得等到最后一章才能看到大结局。