can quit
Irregular verb: quit - quit- quit

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can quit
you can quit
he can quit
we can quit
you can quit
they can quit 	I can be quitting
you can be quitting
he can be quitting
we can be quitting
you can be quitting
they can be quitting	I can have quit
you can have quit
he can have quit
we can have quit
you can have quit
they can have quit	I can have been quitting
you can have been quitting
he can have been quitting
we can have been quitting
you can have been quitting
they can have been quitting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot quit
you cannot quit
he cannot quit
we cannot quit
you cannot quit
they cannot quit 	I cannot be quitting
you cannot be quitting
he cannot be quitting
we cannot be quitting
you cannot be quitting
they cannot be quitting	I cannot have quit
you cannot have quit
he cannot have quit
we cannot have quit
you cannot have quit
they cannot have quit	I cannot have been quitting
you cannot have been quitting
he cannot have been quitting
we cannot have been quitting
you cannot have been quitting
they cannot have been quitting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I quit?
can you quit?
can he quit?
can we quit?
can you quit?
can they quit? 	can I be quitting?
can you be quitting?
can he be quitting?
can we be quitting?
can you be quitting?
can they be quitting? 	can I have quit?
can you have quit?
can he have quit?
can we have quit?
can you have quit?
can they have quit? 	can I have been quitting?
can you have been quitting?
can he have been quitting?
can we have been quitting?
can you have been quitting?
can they have been quitting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not quit?
can you not quit?
can he not quit?
can we not quit?
can you not quit?
can they not quit? 	can I not be quitting?
can you not be quitting?
can he not be quitting?
can we not be quitting?
can you not be quitting?
can they not be quitting? 	can I not have quit?
can you not have quit?
can he not have quit?
can we not have quit?
can you not have quit?
can they not have quit? 	can I not have been quitting?
can you not have been quitting?
can he not have been quitting?
can we not have been quitting?
can you not have been quitting?
can they not have been quitting?