English verb conjugation
CAN SCOFF

Regular verb: scoff - scoffed - scoffed

Affirmation

Simple form	V-ing form
I can scoff you can scoff he can scoff we can scoff you can scoff they can scoff	I can be scoffing you can be scoffing he can be scoffing we can be scoffing you can be scoffing they can be scoffing
Perfect	V-ing perfect
I can have scoffed you can have scoffed he can have scoffed we can have scoffed you can have scoffed they can have scoffed	I can have been scoffing you can have been scoffing he can have been scoffing we can have been scoffing you can have been scoffing they can have been scoffing

Negation

Simple form	V-ing form
I can't scoff you can't scoff he can't scoff we can't scoff you can't scoff they can't scoff	I can't be scoffing you can't be scoffing he can't be scoffing we can't be scoffing you can't be scoffing they can't be scoffing
Perfect	V-ing perfect
I can't have scoffed you can't have scoffed he can't have scoffed we can't have scoffed you can't have scoffed they can't have scoffed	I can't have been scoffing you can't have been scoffing he can't have been scoffing we can't have been scoffing you can't have been scoffing they can't have been scoffing

Interrogative form

Simple form	V-ing form
can I scoff? can you scoff? can he scoff? can we scoff? can you scoff? can they scoff?	can I be scoffing? can you be scoffing? can he be scoffing? can we be scoffing? can you be scoffing? can they be scoffing?
Perfect	V-ing perfect
can I have scoffed? can you have scoffed? can he have scoffed? can we have scoffed? can you have scoffed? can they have scoffed?	can I have been scoffing? can you have been scoffing? can he have been scoffing? can we have been scoffing? can you have been scoffing? can they have been scoffing?

Interro-negative form

Simple form	V-ing form
can't I scoff? can't you scoff? can't he scoff? can't we scoff? can't you scoff? can't they scoff?	can't I be scoffing? can't you be scoffing? can't he be scoffing? can't we be scoffing? can't you be scoffing? can't they be scoffing?
Perfect	V-ing perfect
can't I have scoffed? can't you have scoffed? can't he have scoffed? can't we have scoffed? can't you have scoffed? can't they have scoffed?	can't I have been scoffing? can't you have been scoffing? can't he have been scoffing? can't we have been scoffing? can't you have been scoffing? can't they have been scoffing?