may ventilate
Regular verb: ventilate - ventilated- ventilated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not ventilate
you may not ventilate
she may not ventilate
we may not ventilate
you may not ventilate
they may not ventilate 	I may not be ventilating
you may not be ventilating
she may not be ventilating
we may not be ventilating
you may not be ventilating
they may not be ventilating	I may not have ventilated
you may not have ventilated
she may not have ventilated
we may not have ventilated
you may not have ventilated
they may not have ventilated	I may not have been ventilating
you may not have been ventilating
she may not have been ventilating
we may not have been ventilating
you may not have been ventilating
they may not have been ventilating	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not ventilate?
may you not ventilate?
may she not ventilate?
may we not ventilate?
may you not ventilate?
may they not ventilate? 	may I not be ventilating?
may you not be ventilating?
may she not be ventilating?
may we not be ventilating?
may you not be ventilating?
may they not be ventilating? 	may I not have ventilated?
may you not have ventilated?
may she not have ventilated?
may we not have ventilated?
may you not have ventilated?
may they not have ventilated? 	may I not have been ventilating?
may you not have been ventilating?
may she not have been ventilating?
may we not have been ventilating?
may you not have been ventilating?
may they not have been ventilating?