English verb conjugation
CAN VENTILATE

Regular verb: ventilate - ventilated - ventilated

Affirmation

Simple form	V-ing form
I can ventilate you can ventilate she can ventilate we can ventilate you can ventilate they can ventilate	I can be ventilating you can be ventilating she can be ventilating we can be ventilating you can be ventilating they can be ventilating
Perfect	V-ing perfect
I can have ventilated you can have ventilated she can have ventilated we can have ventilated you can have ventilated they can have ventilated	I can have been ventilating you can have been ventilating she can have been ventilating we can have been ventilating you can have been ventilating they can have been ventilating

Negation

Simple form	V-ing form
I can't ventilate you can't ventilate she can't ventilate we can't ventilate you can't ventilate they can't ventilate	I can't be ventilating you can't be ventilating she can't be ventilating we can't be ventilating you can't be ventilating they can't be ventilating
Perfect	V-ing perfect
I can't have ventilated you can't have ventilated she can't have ventilated we can't have ventilated you can't have ventilated they can't have ventilated	I can't have been ventilating you can't have been ventilating she can't have been ventilating we can't have been ventilating you can't have been ventilating they can't have been ventilating

Interrogative form

Simple form	V-ing form
can I ventilate? can you ventilate? can she ventilate? can we ventilate? can you ventilate? can they ventilate?	can I be ventilating? can you be ventilating? can she be ventilating? can we be ventilating? can you be ventilating? can they be ventilating?
Perfect	V-ing perfect
can I have ventilated? can you have ventilated? can she have ventilated? can we have ventilated? can you have ventilated? can they have ventilated?	can I have been ventilating? can you have been ventilating? can she have been ventilating? can we have been ventilating? can you have been ventilating? can they have been ventilating?

Interro-negative form

Simple form	V-ing form
can't I ventilate? can't you ventilate? can't she ventilate? can't we ventilate? can't you ventilate? can't they ventilate?	can't I be ventilating? can't you be ventilating? can't she be ventilating? can't we be ventilating? can't you be ventilating? can't they be ventilating?
Perfect	V-ing perfect
can't I have ventilated? can't you have ventilated? can't she have ventilated? can't we have ventilated? can't you have ventilated? can't they have ventilated?	can't I have been ventilating? can't you have been ventilating? can't she have been ventilating? can't we have been ventilating? can't you have been ventilating? can't they have been ventilating?