Dictionary / Vocabulary / 役に立つ
やくにたつ
to be helpful; to be useful
JLPT N4 common word Also written 役にたつ、やくに立つ
私のパソコンは何かの役に立つはずだ。
My computer has got to be useful for something.
おやおや。いかな体育の授業といえど・・・真剣勝負の意気込みで臨まなければ、いざ実戦と言う時に役に立ちませんよ。
Well, even if it is just P.E. class, if you don't take it seriously, it won't do you any good in a real match.
老人は役に立つ忠告を１つしてくれた。
The old man gave me a useful piece of advice.