To Be Useful
godan verb
When duty (役) comes calling, those willing to stand (立つ) and accept it are the ones who are going to be useful to society. Don't run from your duties — stand up, face them, and prove yourself a useful member of the human race!
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.
少し役に立つ
to be a little useful
とても役に立つ
to be very useful
必ず役に立つ
to certainly be useful
社会の役に立つ
to be of use to society
何の役に立つ
What good does it do?
人の役に立つ
to be of use to people
役に立つもの
something that comes in handy
役に立つサイト
useful website
役に立つしごと
useful work
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.