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 can't define you can't define he can't define we can't define you can't define they can't define	I can't be defining you can't be defining he can't be defining we can't be defining you can't be defining they can't be defining
Perfect	V-ing perfect
I can't have defined you can't have defined he can't have defined we can't have defined you can't have defined they can't have defined	I can't have been defining you can't have been defining he can't have been defining we can't have been defining you can't have been defining they can't 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't I define? can't you define? can't he define? can't we define? can't you define? can't they define?	can't I be defining? can't you be defining? can't he be defining? can't we be defining? can't you be defining? can't they be defining?
Perfect	V-ing perfect
can't I have defined? can't you have defined? can't he have defined? can't we have defined? can't you have defined? can't they have defined?	can't I have been defining? can't you have been defining? can't he have been defining? can't we have been defining? can't you have been defining? can't they have been defining?