This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.
い-AdjectivePrimary
い-Adjective [past]
い-Adjective [negative]
This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.
このケーキ、すごく美味しい！
This cake is so delicious!
昨日の映画はとても面白かった。
Yesterday's movie was very interesting.
最近、あまり忙しくないんだ。
I haven't been very busy lately.
テストの結果は思ったより悪くなかった。
The test results weren't as bad as I thought.
青い空と白い雲が綺麗だ。
The blue sky and white clouds are beautiful.
This form is for casual talk. It is different from the polite form. The polite form adds 'です' at the end. You use the polite form with people you do not know well. You also use it with people who are above you.
Watch out: Do not add "だった" to make い-adjectives past tense. This is wrong. You change the end of the word. For example, say "楽しかった" (tanoshikatta). Do not say "楽しいだった" (tanoshii datta).
Don't use this when you want to say "good" in the past. You should say "yokatta" not "ikatta".
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