必要

ひつよう

necessary

na-adjective

Conjugation Table

Present

必要だ

Negative

必要じゃない

Past

必要だった

Past Negative

必要じゃなかった

Te Form

必要で

Adverbial

必要に

Conditional

必要なら

Presumptive

必要でしょう

Example Sentences

これは必要ですか？

Is this necessary?

Kore wa hitsuyou desu ka?

昨日、必要な資料をもらいました。

I received the necessary documents yesterday.

Kinou, hitsuyou na shiryou wo moraimashita.

それは必要ではありません。

That is not necessary.

Sore wa hitsuyou dewa arimasen.

Grammar Notes & Usage Tips

•As a Na-Adjective**: 必要 (ひつよう) is a na-adjective, so when you want to use it before a noun, remember to add "な" after 必要. For example, "必要な書類" means "necessary documents."

•Describing Necessity**: To say something "is necessary," use 必要 followed by です or だ for a more casual tone. So, "それは必要です" means "That is necessary."

•Expressing Need**: When expressing that something is needed, use the structure "必要がある" (ひつようがある) to mean "there is a necessity." For instance, "行く必要がある" translates to "It is necessary to go."

•Negative Form**: To express that something is not necessary, use "必要はない" (ひつようはない). For example, "行く必要はない" means "It is not necessary to go."

•な-adjective: Uses な before nouns, conjugates like a noun