Verbs review

We've finally run into all of the basic stems of godan verbs, so this is a good time to review what we've learned. Please don't try to memorize this. Knowing that these ideas exist is enough. If your eyes gloss over, relax. If you can't do it, move on.

The names given are just simple descriptions/reminders of the form, they aren’t proper grammatical names. In parenthesis, the Japanese name and its respective proper terminology will be presented for those who are curious, but you don’t need to remember it. If a stem or form is referred to in the rest of the guide, it will be with the plain English descriptor, not the Japanese name.

FormNameJapanese term
(ない)negative stem未然形 - irrealis form
(ます)masu stem連用形 - continuative form
plain/dictionary form終止形 predicative or 連体形 attributive form
(る/ば)potential stem已然形 perfective or 仮定形 hypothetical form
imperative form命令形 imperative form
こうvolitional form意向形 volitional form

Remember that with godan verbs, there are special rules to conjugate past and て forms. For example for the k row き becomes い:

て
書

For ichidan verbs, the stem stays the same so it’s much easier, just replace the る:

食べ(ない) negative form
食べ(ます) masu form
食べる plain/dictionary form
食べ(られる/れる) potential form
食べ(れば) conditional/ば form
食べ(ろ) imperative form
食べ(よう) volitional form
食べ(て) て form
食べ(た) past form

And the two irregular verbs する and くる:

Formするくる
negativeしないこない
masu stemし(ます)き(ます)
plainするくる
potentialできるこれる
ば stemすればこれば
imperativeしろ/せよこい
volitionalしようこよう
て formしてきて
pastしたきた

Also, as a reminder, the godan verb 行く conjugates irregularly as 行って/行った for て form and past tense.