役立つ

In a sentence

• この本は生活に役立つ情報を提供します。

  This book provides useful information for daily life.

  In this sentence, '役立つ' is used as an adjective modifying '情報' (information) to mean that the information provided by the book is beneficial or practical for daily living.

• 彼の助言は次のプロジェクトを計画するのに役立ちました。

  His advice was helpful in planning the next project.

  Here, '役立つ' is conjugated into its past tense, '役立ちました', indicating that the advice was useful in the context of planning a project.

• このリソースは学習にとても役立つ。

  This resource is very useful for learning.

  In this example, '役立つ' is directly describing the usefulness of a resource in facilitating the process of learning, highlighting its utility.