です — Polite Copula (Is/Am/Are)

Meaning & Usage

Open any Japanese textbook and です is on the first page. It is a copula — a linking word that connects a subject to what it is or how it is described. In English, the closest equivalents are "is," "am," and "are." But unlike English, です never changes form based on the subject. Whether you are talking about yourself, your friend, or a building — です stays the same throughout.

Register matters in Japanese, and です sits squarely in the polite tier. Formally classified as 丁寧語ていねいご (teineigo) — the polite speech register — it is the default for speaking with teachers, customers, strangers, and coworkers you are not close to. Suitable for almost every daily situation, です is the form all learners start with, and for good reason.

Among close friends or family, です is often dropped entirely or swapped for だ (da). You might hear 「私わたしは学生がくせいだ」 instead of 「私わたしは学生がくせいです」. As a learner, start with です — it works in any situation, and you can dial back to だ later once you have a feel for context.

One thing trips up many beginners: です does not work with verbs. Saying 「食たべるです」 is wrong. Verbs have their own polite ending — the ます form — so 「食たべます」 is correct. です belongs after nouns and な-adjectives only. Draw that line early and you will avoid a very common mistake.

Think of です as an equals sign: [Subject] は [Noun/Description] です = [Subject] is [Noun/Description]. That framing makes new sentences easy to build and easy to read.

Structure & Formation

です attaches directly to nouns and な-adjectives. The basic sentence pattern is:

For い-adjectives (adjectives ending in い such as 大おおきい, 小ちいさい, 高たかい), adding です is optional but adds politeness. The い-adjective already carries the predicate meaning on its own.

• Affirmative: Noun + です (e.g., 学生がくせいです — is a student)
• Negative: Noun + ではありません / じゃありません (e.g., 学生がくせいではありません — is not a student)
• Past: Noun + でした (e.g., 学生がくせいでした — was a student)
• Past Negative: Noun + ではありませんでした / じゃありませんでした (e.g., 学生がくせいではありませんでした — was not a student)

Example Sentences

Introducing Yourself

Describing People and Things

Using な-Adjectives

Asking Questions with ですか

Negative and Past Forms

Common Mistakes

Mistake 1: Using です after a verb stem

❌ 食たべるです。

✅ 食たべます。

です is a copula, not a polite ending for verbs. Verbs use the ます form instead — 食たべます, 飲のみます, 行いきます. These already carry politeness. Never attach です directly to a plain-form verb.

Mistake 2: Using the wrong negative form in formal situations

❌ 私わたしは学生がくせいじゃないです。(casual polite)

✅ 私わたしは学生がくせいではありません。(fully polite)

じゃないです is understood and widely used in daily conversation, but it is slightly casual. In formal situations — job interviews, business settings, written submissions — always use ではありません. When in doubt, ではありません is never wrong.

Mistake 3: Confusing です with あります / います

❌ 猫ねこは部屋へやにです。

✅ 猫ねこは部屋へやにいます。

です states what something is. To express existence or location, Japanese uses います (for living things) or あります (for objects). This is a very common error at the N5 level — the two patterns look similar but mean different things.

Mistake 4: Putting です in the wrong position

❌ です学生がくせい私わたしは。

✅ 私わたしは学生がくせいです。

In Japanese, the predicate — including です — always comes at the end of the sentence. The topic (marked by は) comes first, then any description, and です closes everything. This is a fixed rule of Japanese word order.

Mistake 5: Negating い-adjectives with ではありません

❌ 大おおきいではありません。

✅ 大おおきくありません。

When negating い-adjectives, the adjective itself must change — drop the final い and add くありません. Attaching ではありません directly to an い-adjective is a mistake specific to learners used to the noun/な-adjective pattern.

Cultural Notes

Japanese has a layered politeness system, and です sits at the practical center of it — formal enough for strangers, relaxed enough for acquaintances. Many learners expect to graduate past it as their Japanese improves. In practice, even fluent speakers use it every day with neighbors, shopkeepers, and anyone outside their inner circle.

Native speech compresses です in a way textbooks rarely mention. The final u is nearly silent, so 「そうです」 sounds closer to sou des than sou desu. This is called 母音ぼいんの無声化むせいか (vowel devoicing) and is especially common in the Tokyo dialect. You do not need to replicate it right away, but recognizing it will sharpen your listening.

Written Japanese — news articles, novels, essays — typically uses plain だ rather than です. That is not rude; it is simply the standard literary register. Personal emails, messages to acquaintances, and all speech still call for です.

Related Grammar Points

• か — Question Marker (Grammar N5)
• た — Past Tense in Japanese (Grammar N5)
• じゃない — Negative Form for Nouns and Na-Adjectives (Grammar N5)
• Na-Adjective (な形容詞) — Complete Usage Guide (Grammar N5)
• ない — Negative Form (Not) (Grammar N5)
• てください — Please Do (Grammar N5)

JLPT Tips

です turns up in nearly every section of the N5 exam — reading, listening, and language knowledge. Because it is so common, it rarely appears as a standalone test item. Questions focus instead on its conjugated forms and how it contrasts with related patterns.

Know these four forms cold: affirmative present (です), negative present (ではありません), affirmative past (でした), and negative past (ではありませんでした). N5 fill-in-the-blank questions test exactly these, asking you to select the right form based on tense and polarity cues in the sentence.

In the listening section, です is everywhere. Train your ear to catch the difference between でした (past) and です (present) — that distinction drives many timeline and description questions.

A classic N5 trick: a sentence with a noun before the blank, where you must choose between a form of です and a ます-form verb ending. The rule is clean — です follows nouns and な-adjectives; ます follows verb stems. Noun before the blank almost always means a form of です.

Reading passages may be written in the plain だ style. That is not a separate grammar point — だ and です carry the same meaning at different formality levels. Spot that equivalence early and N5 reading passages become much easier to navigate.