JAPANESE STUDY SYSTEMKOTOWA 词和
N5 — N1
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SILVER ERA · ことばを、少しずつ。
JLPT BANDN5 BEGINNER → N1 ADVANCED

〜てはいけない

N5
te wa ikenai

must not; may not

Formation

Verb-te + はいけない

Chinese meanings

不可以做;禁止

Chinese formation

动词て形+はいけない

Chinese usage

表示禁止做某事,常用于规则。

Chinese notes

礼貌形式为〜てはいけません,口语可缩为〜ちゃいけない等。

Examples

  • 図と書しょ館かんで大おおきい声こえで話はなしてはいけません。
    You must not talk loudly in the library.
    不可以在图书馆大声说话。
  • 子こどもはこの川かわで泳およいではいけません。
    Children must not swim in this river.
    孩子不可以在这条河里游泳。
  • ここでたばこを吸すってはいけません。
    You must not smoke here.
    这里禁止吸烟。

Notes

A strong prohibition, often for rules. Polite form: 〜てはいけません. Casual contraction: 〜ちゃいけない / 〜じゃいけない.

#prohibition

Related N5 grammar

Suggest an improvement

Use this entry in code
import { getGrammarById } from 'kotowa';
getGrammarById('te-wa-ikenai');
{
  "id": "te-wa-ikenai",
  "pattern": "〜てはいけない",
  "romaji": "te wa ikenai",
  "level": "N5",
  "meaning": "must not; may not",
  "formation": "Verb-te + はいけない",
  "examples": [
    {
      "ja": "図書館で大きい声で話してはいけません。",
      "furigana": "{図書館|としょかん}で{大|おお}きい{声|こえ}で{話|はな}してはいけません。",
      "en": "You must not talk loudly in the library."
    },
    {
      "ja": "子どもはこの川で泳いではいけません。",
      "furigana": "{子|こ}どもはこの{川|かわ}で{泳|およ}いではいけません。",
      "en": "Children must not swim in this river."
    },
    {
      "ja": "ここでたばこを吸ってはいけません。",
      "furigana": "ここでたばこを{吸|す}ってはいけません。",
      "en": "You must not smoke here."
    }
  ],
  "tags": [
    "prohibition"
  ],
  "notes": "A strong prohibition, often for rules. Polite form: 〜てはいけません. Casual contraction: 〜ちゃいけない / 〜じゃいけない.",
  "zh": {
    "status": "reviewed",
    "source_hash": "028d4564b12b2d32c40aaf1907dbaf286b4d711c391d2c4c3bf82ca96f0c9f37",
    "meanings": [
      "不可以做",
      "禁止"
    ],
    "formation": "动词て形+はいけない",
    "explanation": "表示禁止做某事,常用于规则。",
    "notes": "礼貌形式为〜てはいけません,口语可缩为〜ちゃいけない等。",
    "examples": [
      {
        "ja": "図書館で大きい声で話してはいけません。",
        "zh": "不可以在图书馆大声说话。"
      },
      {
        "ja": "子どもはこの川で泳いではいけません。",
        "zh": "孩子不可以在这条河里游泳。"
      },
      {
        "ja": "ここでたばこを吸ってはいけません。",
        "zh": "这里禁止吸烟。"
      }
    ],
    "references": [
      "sources/grammar/n5.json#te-wa-ikenai",
      "Original Chinese authored and reviewed by Codex; no independent human review"
    ],
    "reviewer": "Codex",
    "review_method": "ai",
    "reviewed_at": "2026-10-28",
    "review_hash": "ac754e8eff4a6c480befdc6f2e5e5fdf3d480fcac8dc19b3065800a8743f5148"
  }
}