These are the lego bricks for Japanese. It is important to understand what each of these are, so it will make sense when building sentences and understanding grammar.

Nouns (めいし、名詞)

Unlike English, in Japanese, nouns are simply nouns. They are words that represent things, objects, and ideas.

Verbs (どうし、動詞)

We will use a structure that describes verb types as a "base" system.

Base Form header Japanese name
B1 negative form cell-content かこけい、過去形
B2 "masu" form cell-content ますけい、ます形
B3 dictionary form cell-content じしょけい、辞書形
B4 command form cell-content めいれいけい、命令形
B5 volition form cell-content いこうけい、意向形
Bte/ta te/ta form cell-content て・たけい、て・た形


  • suru (する)
  • kuru (くる、来る)
  • kaeru (かえる、帰る)

Descriptors ()

Base Form header Japanese name
Dv descriptive verb cell-content いけいようし、い形容詞
Dn descriptive noun cell-content なけいようし、な形容詞


Base Plain Negative Past Past Negative
Dv Dv + i Dv + kunai Dv + katta Dv + kunakatta
Dn Dn + na Dv + dewanai Dv + datta Dn + dewanakatta

Particle ()

Conjugation ()

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