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Suru is one of the only two irregular Japanese verbs. It can be combined with verbs of chinese origin and other loan words to form compound verbs.
Verb ClassIrregular
Stemsu -
This is for a guide only. Please double-check if you need to use the information for something important. I've done my best to get everything right but like any self respecting software there may be bugs in it! .
Present Indicative Plain kekkon suru
kekkon shinai
Polite kekkon shimasu
kekkon shimasen
Past Indicative Plain kekkon shita
kekkon shinakatta
Polite kekkon shimashita
kekkon shimasen deshita
Presumptive Plain kekkon shiyō
kekkon suru darō
kekkon shinai darō
Polite kekkon shimashō
kekkon suru deshō
kekkon shinai deshō
Past Presumptive Plain kekkon shitarō
kekkon shita darō
kekkon shinakatta darō
Polite kekkon shimashitarō
kekkon shinakatta deshō
Present Progressive Plain
Polite kekkon shite imasu
kekkon shite imasen
Past Progressive Plain
Polite kekkon shite imashita
kekkon shite imasen deshita
Provisional Plain kekkon sureba
kekkon shinakereba
Polite kekkon shimaseba
kekkon shimasureba
kekkon shimasen nara
Conditional Plain kekkon shitara
kekkon shinakattara
Polite kekkon shimashitara
kekkon shimasen deshitara
Potential Plain kekkon dekiru
kekkon dekinai
Polite kekkon dekimasu
kekkon dekimasen
Causative Plain kekkon saseru
Imperative Plain kekkon shiro
kekkon suruna
Polite kekkon shite kudasai
kekkon shinaide kudasai
Passive Plainsareru