English verb conjugation
TO UNDERSTAND

Irregular verb: understand - understood - understood

Indicative

Present	Present continuous	Preterite	Preterite continuous
do I not understand? do you not understand? does he not understand? do we not understand? do you not understand? do they not understand?	am I not understanding? are you not understanding? is he not understanding? are we not understanding? are you not understanding? are they not understanding?	did I not understand? did you not understand? did he not understand? did we not understand? did you not understand? did they not understand?	was I not understanding? were you not understanding? was he not understanding? were we not understanding? were you not understanding? were they not understanding?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
have I not understood? have you not understood? has he not understood? have we not understood? have you not understood? have they not understood?	have I not been understanding? have you not been understanding? has he not been understanding? have we not been understanding? have you not been understanding? have they not been understanding?	had I not understood? had you not understood? had he not understood? had we not understood? had you not understood? had they not understood?	had I not been understanding? had you not been understanding? had he not been understanding? had we not been understanding? had you not been understanding? had they not been understanding?
Future	Future continuous	Future perfect	Future perfect continuous
will I not understand? will you not understand? will he not understand? will we not understand? will you not understand? will they not understand?	will I not be understanding? will you not be understanding? will he not be understanding? will we not be understanding? will you not be understanding? will they not be understanding?	will I not have understood? will you not have understood? will he not have understood? will we not have understood? will you not have understood? will they not have understood?	will I not have been understanding? will you not have been understanding? will he not have been understanding? will we not have been understanding? will you not have been understanding? will they not have been understanding?

Conditional

Present	Present continuous	Past	Past continuous
would I not understand? would you not understand? would he not understand? would we not understand? would you not understand? would they not understand?	would I not be understanding? would you not be understanding? would he not be understanding? would we not be understanding? would you not be understanding? would they not be understanding?	would I not have understood? would you not have understood? would he not have understood? would we not have understood? would you not have understood? would they not have understood?	would I not have been understanding? would you not have been understanding? would he not have been understanding? would we not have been understanding? would you not have been understanding? would they not have been understanding?

Infinitive

Imperative

Infinitive		Imperative
to understand		- - -

Participle

Present	Past
understanding	understood