How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between おる and 役立つ. In Japanese, おる (おる (oru)) is typically associated with "to be, to exist (humble form of いる)" (Syllabus Level: N4) and represents 「いる」の謙譲語で、自分や身内の動作や状態を表す時に使います。目上の人に対してへりくだった表現をする際に用います。Humble form of 'iru', used to refer to one's own or one's family's actions or state. Used when speaking humbly to superiors.. On the other hand, 役立つ (やくだつ (yakudatsu)) maps to "to be useful, to be helpful" (Syllabus Level: N3) and represents An intransitive verb. Used to describe something that serves a purpose or provides assistance. Often followed by に.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!