can explain
Regular verb: explain - explained- explained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can explain
you can explain
he can explain
we can explain
you can explain
they can explain 	I can be explaining
you can be explaining
he can be explaining
we can be explaining
you can be explaining
they can be explaining	I can have explained
you can have explained
he can have explained
we can have explained
you can have explained
they can have explained	I can have been explaining
you can have been explaining
he can have been explaining
we can have been explaining
you can have been explaining
they can have been explaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't explain
you can't explain
he can't explain
we can't explain
you can't explain
they can't explain 	I can't be explaining
you can't be explaining
he can't be explaining
we can't be explaining
you can't be explaining
they can't be explaining	I can't have explained
you can't have explained
he can't have explained
we can't have explained
you can't have explained
they can't have explained	I can't have been explaining
you can't have been explaining
he can't have been explaining
we can't have been explaining
you can't have been explaining
they can't have been explaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I explain?
can you explain?
can he explain?
can we explain?
can you explain?
can they explain? 	can I be explaining?
can you be explaining?
can he be explaining?
can we be explaining?
can you be explaining?
can they be explaining? 	can I have explained?
can you have explained?
can he have explained?
can we have explained?
can you have explained?
can they have explained? 	can I have been explaining?
can you have been explaining?
can he have been explaining?
can we have been explaining?
can you have been explaining?
can they have been explaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I explain?
can't you explain?
can't he explain?
can't we explain?
can't you explain?
can't they explain? 	can't I be explaining?
can't you be explaining?
can't he be explaining?
can't we be explaining?
can't you be explaining?
can't they be explaining? 	can't I have explained?
can't you have explained?
can't he have explained?
can't we have explained?
can't you have explained?
can't they have explained? 	can't I have been explaining?
can't you have been explaining?
can't he have been explaining?
can't we have been explaining?
can't you have been explaining?
can't they have been explaining?