Conjugation for Japanese verb Aku, to open, 開く
Verb Class
Godan verb
Stem
開
Te-form
開いて
Meaning
to open
Transitivity
intransitive
Present
Positive
Negative
open
don't open
Plain
開
く
Plain
開
かない
Polite
開
きます
Polite
開
きません
Past tense
Positive
Negative
opened
didn't open
Plain
開
いた
Plain
開
かなかった
Polite
開
きました
Polite
開
きませんでした
Passive ( be + past participle )
Positive
Negative
be opened
be not opened
Plain
-
Plain
-
Polite
-
Polite
-
Potential ( can / cannot )
Positive
Negative
can open
cannot open
Plain
-
Plain
-
Polite
-
Polite
-
Present Progressive ( be Verb + ing )
Positive
Negative
be opening
be not opening
Plain
開
いている
Plain
開
いていない
Polite
開
いています
Polite
開
いていません
Present Want ( want )
Positive
Negative
want to open
don't want to open
Plain
-
Plain
-
Polite
-
Polite
-
Past Want ( wanted )
Positive
Negative
wanted to open
didn't want to open
Plain
-
Plain
-
Polite
-
Polite
-
Imperative
Positive
Negative
open!!
don't open!!
Plain
開
け
Plain
開
くな
Polite
-
Polite
-
Please
Positive
Negative
please open
please don't open
Plain
-
Plain
-
Polite
-
Polite
-
Causative ( make / let / have )
Positive
Negative
make <object> open
don't make <object> open
Plain
-
Plain
-
Polite
-
Polite
-
Conditional Ba Form ( if )
Positive
Negative
if Subject open
if Subject don't open
Plain
開
けば
Plain
開
かなければ
Polite
-
Polite
-
Conditional Tara Form ( if )
Positive
Negative
if Subject open
if Subject don't open
Plain
開
いたら
Plain
開
かなかったら
Polite
-
Polite
-