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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 taipu suru
taipu shinai
Polite taipu shimasu
taipu shimasen
Past Indicative Plain taipu shita
taipu shinakatta
Polite taipu shimashita
taipu shimasen deshita
Presumptive Plain taipu shiyō
taipu suru darō
taipu shinai darō
Polite taipu shimashō
taipu suru deshō
taipu shinai deshō
Past Presumptive Plain taipu shitarō
taipu shita darō
taipu shinakatta darō
Polite taipu shimashitarō
taipu shinakatta deshō
Present Progressive Plain
Polite taipu shite imasu
taipu shite imasen
Past Progressive Plain
Polite taipu shite imashita
taipu shite imasen deshita
Provisional Plain taipu sureba
taipu shinakereba
Polite taipu shimaseba
taipu shimasureba
taipu shimasen nara
Conditional Plain taipu shitara
taipu shinakattara
Polite taipu shimashitara
taipu shimasen deshitara
Potential Plain taipu dekiru
taipu dekinai
Polite taipu dekimasu
taipu dekimasen
Causative Plain taipu saseru
Imperative Plain taipu shiro
taipu suruna
Polite taipu shite kudasai
taipu shinaide kudasai
Passive Plainsareru