An い-adjective can come directly before a noun, as in 小さい猫, or end a polite sentence with です: 高いです. Compare the examples, then use the table to build your own sentences.
The idea
An い-adjective can come directly before a noun, as in 小さい猫, or end a polite sentence with です: 高いです. For the negative, replace the final い with くないです or the more formal くありません: 高い becomes 高くないです.
| Starting form | Form or example |
|---|---|
| 高い | 高いです |
| 高い | 高くないです/高くありません |
| 小さい | 小さい猫 |
| いい | よくないです |
Examples
- この本はとても面白いです。This book is very interesting.
- この部屋はあまり広くないです。This room is not very spacious.
- あの店のパンはとても安いです。The bread at that shop is very cheap.
- 今日は天気がよくないです。The weather is not good today.
- あそこに小さい猫がいます。There is a small cat over there.
- このお茶はあまり熱くありません。This tea is not very hot.
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Watch out
The common adjective いい is irregular: its negative is よくないです, not いくないです. Also, きれい is a な-adjective despite its final い.
Try it yourself
Write the polite negative form. 「高いです」→ __
Show answer or example answer
高くないです
高くないです — For the negative, replace the final い with くないです or the more formal くありません: 高い becomes 高くないです.
Write the polite negative form. 「いいです」→ __
Show answer or example answer
よくないです
よくないです — The common adjective いい is irregular: its negative is よくないです, not いくないです. Also, きれい is a な-adjective despite its final い.
Choose the form that completes the sentence. __猫がいます。(小さい/小さいな)
Show answer or example answer
小さい
小さい — An い-adjective can come directly before a noun, as in 小さい猫, or end a polite sentence with です: 高いです.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
Write the polite negative form. 「高いです」→ __
Write the polite negative form. 「いいです」→ __
Choose the form that completes the sentence. __猫がいます。(小さい/小さいな)
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
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Cover the examples. Make two new sentences using the pattern, then check them against the table.

