Japanese conjugation practice
146 common verbs and adjectives, 26 forms. Choose what to practise, type the conjugated form in romaji or kana, and get the rule when you miss. Missed questions come back a few questions later. No account needed. The guide's grammar chapter explains how conjugation fits into learning grammar.
Questions
Do I need a Japanese keyboard?
No. Type in romaji and it turns into hiragana as you go: tabemashita becomes たべました. A Japanese input method works too, and answers in kanji or kana are both accepted.
Which answers count as right?
The textbook form, plus the everyday alternatives: 食べないです as well as 食べません, じゃない as well as ではない, the short causative passive (飲まされる), and the contracted ている (食べてる).
What's the difference between godan and ichidan verbs?
Ichidan verbs drop る and add an ending (食べる → 食べない). Godan verbs change their last kana to another row of the kana chart (書く → 書かない, 書きます). Some godan verbs end in る and look like ichidan verbs, such as 帰る and 入る; the drill includes them for that reason.
How much conjugation practice do I need?
Enough that the common forms (negative, past, polite, て-form) come without thinking about the rules. After that, reading and listening do the rest: you'll see each form thousands of times in real Japanese.
More practice
Name each kana as it comes up, one row at a time or all at once. Missed ones come back until they stick.
Read a short passage at your level and get your speed in characters an hour, and what that means for novels.