Irregular verb (する)
為るする
suruAlso read する: 刷る (print). All 2 words
為る (する, suru) — to do — is an irregular verb: して (te-form), した (past), しない (negative), します (polite).
It is usually written in kana: する rather than 為る. It also means to carry out; to perform.
How する conjugates · irregular verb
The stem changes with the ending: し, す, でき.
That is what makes する irregular: there is no one stem to attach everything to.
しないしないnegative · I don't do it.
しますしますpolite present
してしてte-form · I do it and …
したしたpast · I did it.
すればすればif · If I do it, ...
しようしようvolitional · Let's do it.
できるできるpotential · I can do it.its own word
Every noun + する compound conjugates the same way.
N5 N tags give the JLPT level at which the game starts quizzing a form.
PLAIN
| Form | Conjugation | Audio |
|---|---|---|
| present N5 | する suru | |
| past N5 I did it. | した shita | |
| negative N5 I don't do it. | しない shinai | |
| te-form N5 I do it and … | して shite | |
| past negative N4 I didn't do it. | しなかった shinakatta | |
| volitional N4 Let's do it. | しよう shiyou | |
| potential N3 I can do it. | できる dekiru | |
| cond. ば N3 If I do it, ... | すれば sureba | |
| cond. たら N3 When I do it, ... | したら shitara | |
| passive N2 It gets done. | される sareru | |
| causative N2 I make someone do it. | させる saseru | |
| imperative N1 Do it! | しろ shiro |
POLITE
| Form | Conjugation | Audio |
|---|---|---|
| present N5 | します shimasu | |
| past N5 I did it. | しました shimashita | |
| negative N5 I don't do it. | しません shimasen | |
| past negative N4 I didn't do it. | しませんでした shimasendeshita | |
| volitional N4 Let's do it. | しましょう shimashou |
ASPECT
| Form | Conjugation | Audio |
|---|---|---|
| ている N4 I'm doing it. | している shiteiru | |
| ていた N4 I was doing it. | していた shiteita | |
| ています N4 I'm doing it. | しています shiteimasu | |
| ていました N4 I was doing it. | していました shiteimashita |