can froth
Regular verb: froth - frothed- frothed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can froth
you can froth
he can froth
we can froth
you can froth
they can froth 	I can be frothing
you can be frothing
he can be frothing
we can be frothing
you can be frothing
they can be frothing	I can have frothed
you can have frothed
he can have frothed
we can have frothed
you can have frothed
they can have frothed	I can have been frothing
you can have been frothing
he can have been frothing
we can have been frothing
you can have been frothing
they can have been frothing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't froth
you can't froth
he can't froth
we can't froth
you can't froth
they can't froth 	I can't be frothing
you can't be frothing
he can't be frothing
we can't be frothing
you can't be frothing
they can't be frothing	I can't have frothed
you can't have frothed
he can't have frothed
we can't have frothed
you can't have frothed
they can't have frothed	I can't have been frothing
you can't have been frothing
he can't have been frothing
we can't have been frothing
you can't have been frothing
they can't have been frothing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I froth?
can you froth?
can he froth?
can we froth?
can you froth?
can they froth? 	can I be frothing?
can you be frothing?
can he be frothing?
can we be frothing?
can you be frothing?
can they be frothing? 	can I have frothed?
can you have frothed?
can he have frothed?
can we have frothed?
can you have frothed?
can they have frothed? 	can I have been frothing?
can you have been frothing?
can he have been frothing?
can we have been frothing?
can you have been frothing?
can they have been frothing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I froth?
can't you froth?
can't he froth?
can't we froth?
can't you froth?
can't they froth? 	can't I be frothing?
can't you be frothing?
can't he be frothing?
can't we be frothing?
can't you be frothing?
can't they be frothing? 	can't I have frothed?
can't you have frothed?
can't he have frothed?
can't we have frothed?
can't you have frothed?
can't they have frothed? 	can't I have been frothing?
can't you have been frothing?
can't he have been frothing?
can't we have been frothing?
can't you have been frothing?
can't they have been frothing?