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Lesson 60: Conjugating な-adjectives

In this lesson you will learn how to conjugate な-adjectives into the past tense and the negative form in Japanese. In both cases the adjective itself is left unchanged while です, the to be verb, is modified, as shown in the below tables.

Positive Negative
Present 〜です 〜じゃ ない です
Past 〜でした 〜じゃ なかった です

Look at the sentences below to see these conjugations applied in sentences.

English Japanese
The moon is beautiful, isn't it? つきはきれいですね。
tsuki wa kirei desu ne.
The car is not safe. くるまあんぜんじゃないです。
kuruma wa anzen ja nai desu.
I was good. わたしじょうでした。
watashi wa jouzu deshita.
You were not bad. あなたはじゃなかったです。
anata wa heta ja nakatta desu.
The apple was pretty, but it was not delicious. りんごがきれいでしたけれど、おいしくなかったです。
ringo ga kirei deshita keredo, oishiku nakatta desu.
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