learn the hard way

意味

to find something out through your own mistakes

自分の失敗を通して物事を知る.

例文

1. 1I learnt the hard way that cheap shoes don't last.
2. 2Many new drivers learn the hard way that parking fines are expensive.
3. 3Ben learnt the hard way to back up his work after losing a whole essay.
4. 4Never lend money to friends without writing it down; I learnt the hard way.
5. 5Why do some people only learn the hard way, even when everyone warns them?

文法

learn は規則動詞：learned、イギリス英語では learnt も使う。知った内容は that で始まる節で続けることが多い