let that be a lesson to you
成語所屬單字lesson
let that be a lesson to you — 慣用語
1. used to tell someone that they should learn from a mistake or failure that has j
1.慣用語
釋義
你這次完全沒準備所以沒通過——記取教訓，下次別再這樣了。
used to tell someone that they should learn from a mistake or failure that has just happened.
例句
You failed because you did not prepare at all — let that be a lesson to you for next time.