Adjective Course

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Marshall
JLPT Basic, JLPT Course
Free
  • 5 lessons
  • 0 quizzes
  • 96 week duration

Adjective Course

Lesson 2: i-adj

There are six forms in i-adj.
They are Negative Form, Past Tense Form,  Negative Past Tense Form, Te Form, Adverb Form, Noun Form.

WordMeaning
かわいいcute
さむいcold
たのしいhappy
Example words I will use in this lesson.

How to convert i-adj into different forms?

Form How to convert
Negative FormChange the い in the end to く, and add ない or ありません. 
Note: 〜くありません is the polite form and 〜くない is the plain form.

Examples:
1.かわいい→かわいくない/かわいくありません
2.さむい→さむくない/さむくありません
3.たのしい→たのしくない/たのしくありません
Past Tense FormChange the い in the end to かった.

Examples:
1.かわいい→かわいかった
2.さむい→さむかった
3.たのしい→たのしかった
Negative Past Tense FormChange the い in the end to く, and add なかった/ありませんでした.
Note: 〜くありませんでした is the polite form and 〜くなかった is the plain form.

Examples:
1.かわいい→かわいくなかった/かわいくありませんでした
2.さむい→さむくなかった/さむくありませんでした
3.たのしい→たのしくなかった/たのしくありませんでした
Te FormChange the い in the end to く, and add て.(Te Form of adjectives has nothing to do with “please”, it’s used in many Japanese grammar rules you will learn in the later grammar lessons. For example, さむくて+しょうがない→very cold.)

Examples:
1.かわいい→かわいくて
2.さむい→さむくて
3.たのしい→たのしくて
Adverb FormChange the い in the end to く.

Examples:
かわいい→かわいく(かわいくった写真しゃしん  →Cute shot!)
さむい→さむく
たのしい→たのしく
Noun FormChange the い in the end to さ.

Examples:
かわいい→かわいさ
さむい→さむさ
たのしい→たのしさ

Practice:

You can use the words below to practice what you have learned today.

WordMeaning
うれしいhappy
あついhot
あたらしいnew
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16 thoughts on “Lesson 2: i-adj

  1. how do I know which adjective is イ and which ナ?

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    1. Nvm I got this

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  2. Just a suggestion. It’d be better if verb course has some verbs to practice with too, like in this adjective course :3 since newbies don’t really know that much vocab. Can you think about that :3

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    1. Admin bar avatar

      Sure, I will add it now.

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  3. Please consider adding tests to Adjective course too.

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    1. Admin bar avatar

      What kind of test do you want? an example please?

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    2. I would like Conjugation tests like the Verb courses’ ones. Tests that help with identifying Adjective types and conjugating their forms are much appreciated.

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  4. When would you need to change the form of adjectives? In English, there’s really no need to, so I’m a bit confused when you would use the normal form of the adjective vs any of these forms – do you have to conjugate adjectives the same as the verb in a particular sentence?

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    1. Admin bar avatar

      I will let you know when I added it!

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  5. thank you for this! it’s much clearer to me now. ❤️

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    1. Admin bar avatar

      You are welcome!

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  6. Hey Marshall! Can you use the polite form when directly modifying a noun?
    i.e. 怖い話 -> 怖くありません話

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    1. Admin bar avatar

      Nope, it’s wrong

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    2. So plain form only, got it! By the way, I’ve seen some nouns with verbs before them, like 食べる時間 and 住む家, is there a guide on this kind of adjectival use?

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    3. Admin bar avatar

      Got it, I will make one to teach this kind of usage, stay tuned!

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    4. Thanks a bunch Marshall!

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