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Phrase
| A phrase which indicates prohibition. | Cannot do something; must not do something; don't do something; should not do something |
| 【Related Expression: はならない】 |
(ks). この部屋に入ってはいけない・いけません。
You must not enter this room.
| Vて | はいけない | |
| 話してはいけない | Must not talk | |
| 食べてはいけない | Must not eat |
(a). 教室でものを食べてはいけません。
You must not eat (food) in the classroom.
(b). 花子はまだ酒を飲んではいけない。
Hanako must/can not drink alcohol yet.
1. In Verbてはいけない, the second person subject is usually omitted, as in Key Sentence and Example (a).
2. Verbてはいけない is often used as a negative answer to "Verbてもいいです (May I ~?)."
(⇨ てもいい)
【Related Expression】
Verbてはならない also expresses prohibition. Verbてはならない, however, sounds a little stronger than Verbてはいけない.