Japanese phrase
___は必須ですか？ ___ wa his su de su ka
Meaning
Is ___ required?
When to use it
Asks whether something is required. It is a polite way to check rules, attendance, or participation.
Example dialogue
この授業への参加は必須ですか？ ko no ju gyō e no san ka wa his su de su ka
Is participation in this class required?
いいえ、自由参加です。 i i e ji yū san ka de su
No, participation is optional.