helpfulとは 意味・定義・例文
Adjective 形容詞
1. giving help; useful or beneficial
役に立つ, 有益な, 有用な
Your advice is always helpful to me. This will be helpful to you. I'm sorry that I wasn't helpful. It was very helpful of you to do that. ー You were helpful to do that.
2. willing and eager to help; supportive or cooperative
進んで手伝う, 協力的な