Meaning
〜てはいけません expresses a strong prohibition or forbidden action. It is formed by adding はいけません to the te-form of a verb. This pattern is used when you want to clearly prohibit someone from doing something, but note that it carries a strong tone and should not be used with superiors or in formal hierarchical situations.
Formation
| Part of speech | Formation |
|---|---|
| 动词 | 動詞（て形）はいけません |
Examples
-
この部屋で たばこを 吸っては いけません。
You cannot smoke in this room. -
ここで 泳いでは いけません。
You are not allowed to swim here.
Summary
- Pattern: Verb (te-form) + はいけません
- Expresses strong prohibition or forbidden actions
- Should not be used with superiors due to its strong, commanding tone