N5 · Structured courses

Masen and Mashita: Polite Negative and Past

Learn the negative (ません), past (ました), and past negative (ませんでした) forms of masu. This lesson combines form, context, examples, common mistakes, and practice so you can use the pattern in real communication.

12 minNihongo Hub Editorial TeamPublished 2026-06-06Updated 2026-06-06

Learning objectives

  • Lesson goals: Learn the negative (ません), past (ました), and past negative (ませんでした) forms of masu.
  • Form and connection: [Verb masu-stem] ません / ました / ませんでした
  • Nuance in real use: ません and ました let you be both polite and precise about time — a unique beauty of Japanese grammar.

Form and connection

[Verb masu-stem] ません / ました / ませんでした

Core Explanation

Learn the negative (ません), past (ました), and past negative (ませんでした) forms of masu.

Cultural Note

ません and ました let you be both polite and precise about time — a unique beauty of Japanese grammar.

Practical examples

I don't eat meat.
I watched a movie yesterday.
I didn't eat breakfast.

Common pitfalls

Build the base form before adding the pattern

Complete the required conjugation first. Do not keep polite and plain endings at the same time.

Match politeness to the situation

The examples are reliable starting points; relationships and context can still change the most natural wording.

Practice and answers

1. Write the connection formula for this lesson.
Show answer[Verb masu-stem] ません / ました / ませんでした
2. Explain the meaning of the first example.
Show answerI don't eat meat.
3. Rewrite the final example using this lesson pattern.
Show answer朝あさごはんを食たべませんでした。 ([Verb masu-stem] ません / ました / ませんでした)

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