How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between 気を付ける and 活躍する. In Japanese, 気を付ける (きをつける (ki o tsukeru)) is typically associated with "to be careful, to pay attention" (Syllabus Level: N4) and represents Used to advise caution or remind someone to pay attention. The polite form is 気を付けます. On the other hand, 活躍する (かつやくする (katsuyaku suru)) maps to "to be active; to play an active part; to flourish" (Syllabus Level: N3) and represents Often used to describe someone performing well or playing a significant role in a specific field, event, or situation.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!