How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between 気をつける and 切れる. In Japanese, 気をつける (きをつける (ki o tsukeru)) is typically associated with "to be careful, to pay attention, to look out" (Syllabus Level: N4) and represents Often used to warn someone or remind them to be cautious. On the other hand, 切れる (きれる (kireru)) maps to "to be cut; to snap; to expire; to run out of" (Syllabus Level: N4) and represents This verb describes something being cut, breaking off, or an item's expiration/supply running out. Often used for threads, strings, or food/tickets.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!