can define
Regular verb: define - defined- defined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can define
you can define
she can define
we can define
you can define
they can define 	I can be defining
you can be defining
she can be defining
we can be defining
you can be defining
they can be defining	I can have defined
you can have defined
she can have defined
we can have defined
you can have defined
they can have defined	I can have been defining
you can have been defining
she can have been defining
we can have been defining
you can have been defining
they can have been defining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot define
you cannot define
she cannot define
we cannot define
you cannot define
they cannot define 	I cannot be defining
you cannot be defining
she cannot be defining
we cannot be defining
you cannot be defining
they cannot be defining	I cannot have defined
you cannot have defined
she cannot have defined
we cannot have defined
you cannot have defined
they cannot have defined	I cannot have been defining
you cannot have been defining
she cannot have been defining
we cannot have been defining
you cannot have been defining
they cannot have been defining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I define?
can you define?
can she define?
can we define?
can you define?
can they define? 	can I be defining?
can you be defining?
can she be defining?
can we be defining?
can you be defining?
can they be defining? 	can I have defined?
can you have defined?
can she have defined?
can we have defined?
can you have defined?
can they have defined? 	can I have been defining?
can you have been defining?
can she have been defining?
can we have been defining?
can you have been defining?
can they have been defining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not define?
can you not define?
can she not define?
can we not define?
can you not define?
can they not define? 	can I not be defining?
can you not be defining?
can she not be defining?
can we not be defining?
can you not be defining?
can they not be defining? 	can I not have defined?
can you not have defined?
can she not have defined?
can we not have defined?
can you not have defined?
can they not have defined? 	can I not have been defining?
can you not have been defining?
can she not have been defining?
can we not have been defining?
can you not have been defining?
can they not have been defining?