To Be Useful
To Be Of Use, To Be Helpful, To Be Of Service
godan verb
When you stand up to do your duty you're standing up and finally being useful. That's why this verb means to be useful.
The reading for 役 is the one you learned with the kanji. The 立つ reading is that of the 立つ vocabulary, which you should be familiar with by now.
社会の役に立つ
to be of use to society
人の役に立つ
to be of use to people
何の役に立つ
What good does it do?
役に立つしごと
useful work
役に立つサイト
useful website
役に立つもの
something that comes in handy
必ず役に立つ
to certainly be useful
とても役に立つ
to be very useful
少し役に立つ
to be a little useful
マスキングテープは、色々なことの役に立つ。
Masking tape is useful for various things.
山下先生の助言は、人生の役に立つ。
Yamashita-sensei's advice is helpful for life.
あまりお役に立てず、すみませんでした。
I'm sorry that I couldn't be much help.