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 cannot scoff you cannot scoff he cannot scoff we cannot scoff you cannot scoff they cannot scoff	I cannot be scoffing you cannot be scoffing he cannot be scoffing we cannot be scoffing you cannot be scoffing they cannot be scoffing
Perfect	V-ing perfect
I cannot have scoffed you cannot have scoffed he cannot have scoffed we cannot have scoffed you cannot have scoffed they cannot have scoffed	I cannot have been scoffing you cannot have been scoffing he cannot have been scoffing we cannot have been scoffing you cannot have been scoffing they cannot 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 I not scoff? can you not scoff? can he not scoff? can we not scoff? can you not scoff? can they not scoff?	can I not be scoffing? can you not be scoffing? can he not be scoffing? can we not be scoffing? can you not be scoffing? can they not be scoffing?
Perfect	V-ing perfect
can I not have scoffed? can you not have scoffed? can he not have scoffed? can we not have scoffed? can you not have scoffed? can they not have scoffed?	can I not have been scoffing? can you not have been scoffing? can he not have been scoffing? can we not have been scoffing? can you not have been scoffing? can they not have been scoffing?