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 cannot ventilate you cannot ventilate she cannot ventilate we cannot ventilate you cannot ventilate they cannot ventilate	I cannot be ventilating you cannot be ventilating she cannot be ventilating we cannot be ventilating you cannot be ventilating they cannot be ventilating
Perfect	V-ing perfect
I cannot have ventilated you cannot have ventilated she cannot have ventilated we cannot have ventilated you cannot have ventilated they cannot have ventilated	I cannot have been ventilating you cannot have been ventilating she cannot have been ventilating we cannot have been ventilating you cannot have been ventilating they cannot 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 I not ventilate? can you not ventilate? can she not ventilate? can we not ventilate? can you not ventilate? can they not ventilate?	can I not be ventilating? can you not be ventilating? can she not be ventilating? can we not be ventilating? can you not be ventilating? can they not be ventilating?
Perfect	V-ing perfect
can I not have ventilated? can you not have ventilated? can she not have ventilated? can we not have ventilated? can you not have ventilated? can they not have ventilated?	can I not have been ventilating? can you not have been ventilating? can she not have been ventilating? can we not have been ventilating? can you not have been ventilating? can they not have been ventilating?