How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between います and 役立つ. In Japanese, います (います (imasu)) is typically associated with "to be, to exist (animate objects)" (Syllabus Level: N5) and represents Polite form of いる. Used for the existence of animate objects. 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!