How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between 間に合う and がっかりする. In Japanese, 間に合う (まにあう (maniau)) is typically associated with "to be on time, to make it in time" (Syllabus Level: N4) and represents Intransitive verb. Used to express arriving at a place or completing something by a specific time. Often used with the particle 'に'.. On the other hand, がっかりする (がっかりする (gakkari suru)) maps to "to be disappointed, to feel let down" (Syllabus Level: N4) and represents An onomatopoeic verb describing the feeling of disappointment or sadness when expectations are not met. Often used with a particle like に. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!