How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between 困る and 役に立つ. In Japanese, 困る (こまる (komaru)) is typically associated with "to be troubled, to be in difficulty" (Syllabus Level: N4) and represents Intransitive verb. Used to express being in a difficult, embarrassing, or problematic situation. Often used when one doesn't know what to do.. On the other hand, 役に立つ (やくにたつ (yaku ni tatsu)) maps to "to be useful, to be helpful" (Syllabus Level: N4) and represents A set phrase meaning to be useful or helpful for someone or something. It describes the utility of an object, skill, or person. Often followed by the particle に. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!