GRGrue3·Mar 19, 2017Recommendation phrase
You're forgetting that there are only 3 (three) verb conjugations in English, of which two are almost always the same. Only a finite number of verbs have irregular conjugations, so you just learn them along with vocabulary. In Japanese, the number of possible conjugations of all irregular verbs (copula, "suru", "kuru") is probably larger than the number of English irregular verbs that are commonly used. In fact, let's count the number of conjugations of "kuru" in my ICHIRAN [1] database:
ICHIRAN/DICT> (length (get-kana-forms 1547720))
186
Are English possessives considered difficult by anyone? Not sure what that demonstrates.
Plurals! Oh, that's my favorite topic that I'm working on right now. -tachi is mostly used with people, so can't be used in most context. For inanimate objects you just say the number of them. And that's whe
Read the rest
re the counters come in... At which point any sane person gives up learning Japanese for good.
Past tense, isn't that the same as conjugations? Also your rules don't really work. "tanoshii" => "tanoshiideshita"? Pretty sure that's not a word. The correct past tense is "tanoshikatta [desu]".
[1] https://github.com/tshatrov/ichiran