Master Japanese Polite Negatives: The 〜ません (~masen) Form

Welcome to your definitive guide to mastering the 〜ません (~masen) form.

In Japanese, politeness is key. When speaking to teachers, bosses, acquaintances, or strangers, you will use the Polite Form (丁寧語 - Teineigo). While 〜ます (~masu) is used to say "will do" or "does," 〜ません (~masen) is its negative counterpart, meaning "will not do" or "does not."丁寧語

---

1. How to Conjugate: From Dictionary Form to 〜ません

To create the polite negative form, we must first look at the verb's dictionary (plain) form and identify its group.

Group 1: U-Verbs (Godan)

For Group 1 verbs, change the final ~u vowel sound of the dictionary form to its corresponding ~i sound, then add 〜ません.

Group 2: Ru-Verbs (Ichidan)

For Group 2 verbs, conjugation is simple: drop the final 〜る (ru) and add 〜ません.

Group 3: Irregular Verbs

There are only two irregular verbs in Japanese. Memorize these conversions directly:

Note: Notice how the kanji pronunciation for 来る changes from "ku-ru" to "ki-masen".来

---

3. Quick Practice Challenge

Test your understanding! Convert the following dictionary-form verbs into the polite negative (〜ません) form:

1. 買う (kau - to buy)買
2. 起きる (okiru - to wake up)起
3. 勉強する (benkyou suru - to study)勉強

Answers:

1. 買いません (kaimasen) — Group 1: 'u' becomes 'i' (u $\rightarrow$ i), add masen.買
2. 起きません (okimasen) — Group 2: Drop 'ru', add masen.起
3. 勉強しません (benkyou shimasen) — Group 3: 'suru' becomes 'shimasen'.勉強

---

Tutor Pro-Tip 💡

To sound like a natural speaker, keep the "n" sound at the end of 〜ません crisp. Do not drop the final "n" sound, but do not over-pronounce it as "mu". It is a nasalized "n" that gently closes the sentence. Happy studying!

2. Sentence Examples in Action

In Japanese, the same verb form is used for both the present habitual tense (things you do/don't do regularly) and the future tense (things you will/will not do). Context tells you which one is meant.

Example 1: Habitual Action (Present)

• Affirmative: 私は朝ごはんを食べます。
  • Watashi wa asagohan o tabemasu.
  • I eat breakfast.
  私朝食
• Negative: 私は朝ごはんを食べません。
  • Watashi wa asagohan o tabemasen.
  • I do not eat breakfast.
  私朝食

Example 2: Future Intention (Future)

• Affirmative: 明日、学校へ行きます。
  • Ashita, gakkou e ikimasu.
  • I will go to school tomorrow.
  明日学校行
• Negative: 明日、学校へ行きません。
  • Ashita, gakkou e ikimasen.
  • I will not go to school tomorrow.
  明日学校行

---