must not

動詞

非過去形現在分詞なし分詞過去

Used to indicate that something is forbidden.

日本語の意味

～してはならない

Visitors must not feed the animals in the sanctuary.

訪問者は保護区で動物に餌を与えてはいけません。

意味（1）

Used to indicate that something is forbidden.

Pedestrians must not cross the road until the light goes green.

must not

（ present singular third-person ）