English verb conjugation CAN UNDERSTAND

Irregular verb: understand - understood - understood

Affirmation

Simple form

I can understand
you can understand
she can understand
we can understand
you can understand
they can understand

V-ing form

I can be understanding
you can be understanding
she can be understanding
we can be understanding
you can be understanding
they can be understanding

Perfect

I can have understood
you can have understood
she can have understood
we can have understood
you can have understood
they can have understood

V-ing perfect

I can have been understanding
you can have been understanding
she can have been understanding
we can have been understanding
you can have been understanding
they can have been understanding

Negation

Simple form

I cannot understand
you cannot understand
she cannot understand
we cannot understand
you cannot understand
they cannot understand

V-ing form

I cannot be understanding
you cannot be understanding
she cannot be understanding
we cannot be understanding
you cannot be understanding
they cannot be understanding

Perfect

I cannot have understood
you cannot have understood
she cannot have understood
we cannot have understood
you cannot have understood
they cannot have understood

V-ing perfect

I cannot have been understanding
you cannot have been understanding
she cannot have been understanding
we cannot have been understanding
you cannot have been understanding
they cannot have been understanding

Interrogative form

Simple form

can I understand?
can you understand?
can she understand?
can we understand?
can you understand?
can they understand?

V-ing form

can I be understanding?
can you be understanding?
can she be understanding?
can we be understanding?
can you be understanding?
can they be understanding?

Perfect

can I have understood?
can you have understood?
can she have understood?
can we have understood?
can you have understood?
can they have understood?

V-ing perfect

can I have been understanding?
can you have been understanding?
can she have been understanding?
can we have been understanding?
can you have been understanding?
can they have been understanding?

Interro-negative form

Simple form

can I not understand?
can you not understand?
can she not understand?
can we not understand?
can you not understand?
can they not understand?

V-ing form

can I not be understanding?
can you not be understanding?
can she not be understanding?
can we not be understanding?
can you not be understanding?
can they not be understanding?

Perfect

can I not have understood?
can you not have understood?
can she not have understood?
can we not have understood?
can you not have understood?
can they not have understood?

V-ing perfect

can I not have been understanding?
can you not have been understanding?
can she not have been understanding?
can we not have been understanding?
can you not have been understanding?
can they not have been understanding?

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