English verb conjugation
CAN DEFINE

Regular verb: define - defined - defined

Affirmation

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