Lesson 7: Adjectives — Describing Your World

Describe what you notice—and what changed

A café can be 静かです, quiet now, or 静かでした, quiet when you visited. A meal can be おいしいです, delicious, or おいしくなかったです, not delicious on that occasion. These small changes let you give useful information instead of just naming a place or thing.

In this lesson, build descriptions in two ways: a quiet café and the café is quiet. Then change a description to the past or negative. Readings support unfamiliar kanji and katakana; you can practice the grammar before memorizing their spellings.

1. Learn the adjective's pattern, not just its last sound

The two main adjective classes used in beginner Japanese are い-adjectives and な-adjectives. Learn an adjective with a short example so you know its class.

For the ordinary affirmative forms here, an い-adjective keeps its final い before a noun. A な-adjective uses な to link to the noun. At the end of the polite statement, use 静かです, not 静かなです.

きれい (beautiful/clean) and 嫌い（きらい） (disliked) are な-adjectives even though their kana spellings end in い. Final spelling or sound alone is not a reliable classifier: learn きれいな花, a beautiful flower, and きらいな食べ物, disliked food.

Useful い-adjectives

易しい and 優しい sound alike but differ in meaning: 易しい問題, an easy problem; 優しい人, a kind person. Hiragana やさしい can express either; the context supplies the sense. 古い is useful for an old temple or car. It is not the ordinary way to state that a person is elderly, though it can describe long-standing relationships or old-fashioned ways in suitable expressions.

暑い describes heat in the weather or air. 熱い（あつい） is the same pronunciation with different kanji for hot things such as coffee. A tall mountain and an expensive meal both use 高い; the noun tells you which sense is intended.

Useful な-adjectives

好き fits the pattern from introductions: 寿司が好きです (Sushi ga suki desu), I like sushi. 親切な人 (shinsetsu na hito) is a kind/helpful person. These are adjective patterns; translating an English verb such as “like” does not determine the Japanese word class.

2. Change an い-adjective at its ending

Use 大きい as the model. Remove only the last い when adding the past or negative ending.

The changed adjective carries the past/negative meaning. おいしかったです is “was delicious”; おいしいでした is not the standard past form. Keep です after the inflected adjective when using this polite pattern.

You may also hear 大きくありません and 大きくありませんでした for the polite negative and past negative. Both those forms and 大きくないです / 大きくなかったです are valid. The choice is partly register and style; there is no need to grade one as the only polite answer.

Do not substitute 大きいじゃないです for the ordinary factual negative. In a remark such as 大きいじゃないですか！, the speaker may be pointing out “It's big, isn't it!” The sequence has a different conversational function; it is not merely a less polite version of “It isn't big.” Use 大きくないです for the straightforward negative practiced here.

Good uses the よ- forms

Learn いい → よかった / よくない / よくなかった together. The forms follow the よい stem; simply changing the last い of いい would give the wrong standard form.

Try it: change おいしい to “was delicious,” then 高い to “wasn't expensive.”
Check: おいしかった and 高くなかった. Add です for the polite sentences: おいしかったです; 高くなかったです.

3. Keep a な-adjective's base, change the ending after it

The base 静か stays intact. The endings supply tense, polarity and politeness. じゃ is a contracted form of では. Other polite negative options include 静かではありません and 静かではありませんでした; ではないです and ではなかったです also occur.

A な-adjective does not require です in every context. Plain 静かだ and 静かだった are possible, and a brief conversational response may simply be 静か. This lesson's model conversations use polite forms so you can practice one consistent style.

Before a noun, the ordinary affirmative pattern is 静かな図書館, a quiet library. Past or negative descriptions use their own endings, for example 静かだった図書館, a library that was quiet, and 静かではない図書館, a library that is not quiet. You do not append な after those inflected forms.

Two useful distinctions

大きい犬 and 大きな犬 can both mean a big dog. 大きな is a separate form used before nouns, as is 小さな for small. This does not license adding な to 大きい: 大きいな犬 is not the standard noun phrase.

有名な人（ゆうめいなひと） is the ordinary adjective-plus-noun phrase “a famous person.” 有名人（ゆうめいじん） is also a real word meaning a famous person/celebrity. It is a compound noun with its own reading, not a misspelled 有名な人. A drill requesting the な-adjective pattern should specify that target.

4. Use a description to answer a real question

At a café

A: このコーヒーはどうですか。
Kono kōhī wa dō desu ka? — How is this coffee?

B: おいしいです。でも、少し高いです。
Oishii desu. Demo, sukoshi takai desu. — It's delicious, but a little expensive.

A: 昨日のピザはどうでしたか。
Kinō no piza wa dō deshita ka? — How was yesterday's pizza?

B: おいしかったです。高くなかったです。
Oishikatta desu. Takakunakatta desu. — It was delicious. It wasn't expensive.

どうですか asks how something is; どうでしたか asks how it was. 昨日（きのう / kinō） means yesterday, でも means but, and 少し（すこし / sukoshi） means a little. A subject already clear from the question can be omitted in the answer.

Talking about a friend

A: 友達はどんな人ですか。
Tomodachi wa donna hito desu ka? — What kind of person is your friend?

B: 優しい人です。とても親切です。
Yasashii hito desu. Totemo shinsetsu desu. — A kind person. Very helpful.

どんな asks what kind of; とても means very. ね can invite agreement or shared understanding: 静かですね, “It's quiet, isn't it?” Its exact English translation depends on the tone and situation.

Words for the remaining practice scenes

To say using chopsticks was difficult, make the activity explicit: 箸を使うのは難しかったです。 (Hashi o tsukau no wa muzukashikatta desu.) Here 使うの turns “use” into an activity phrase: using chopsticks. It is clearer than a contextless statement that the chopsticks themselves were difficult.

5. A short visit: read, then change the description

昨日、友達と町に行きました。カフェは静かでした。コーヒーはおいしかったです。でも、高くなかったです。夜景もきれいでした。楽しい一日でした。
Kinō, tomodachi to machi ni ikimashita. Kafe wa shizuka deshita. Kōhī wa oishikatta desu. Demo, takakunakatta desu. Yakei mo kirei deshita. Tanoshii ichinichi deshita.

Yesterday I went into town with a friend. The café was quiet. The coffee was delicious, but it wasn't expensive. The night view was beautiful too. It was an enjoyable day.

行きました is the polite past of 行きます, went. も adds “too,” and 一日（いちにち） means a day here. In 楽しい一日でした, 楽しい modifies the noun 一日, while でした makes the whole noun predicate past. Compare 楽しかったです, “It was fun,” where the adjective itself is the predicate. Both are valid patterns.

Now change two facts: make the café not quiet, and the coffee inexpensive in the past.
Check: カフェは静かじゃなかったです。コーヒーは安かったです。

Choose one place, one food and one experience. Describe each now, then imagine it yesterday and change the ending. Check the adjective class before you change it. Next, recognize familiar words in kanji on calendars and signs.