English verb conjugation
CAN GOLF

Regular verb: golf - golfed - golfed

Affirmation

Simple form	V-ing form
I can golf you can golf he can golf we can golf you can golf they can golf	I can be golfing you can be golfing he can be golfing we can be golfing you can be golfing they can be golfing
Perfect	V-ing perfect
I can have golfed you can have golfed he can have golfed we can have golfed you can have golfed they can have golfed	I can have been golfing you can have been golfing he can have been golfing we can have been golfing you can have been golfing they can have been golfing

Negation

Simple form	V-ing form
I can't golf you can't golf he can't golf we can't golf you can't golf they can't golf	I can't be golfing you can't be golfing he can't be golfing we can't be golfing you can't be golfing they can't be golfing
Perfect	V-ing perfect
I can't have golfed you can't have golfed he can't have golfed we can't have golfed you can't have golfed they can't have golfed	I can't have been golfing you can't have been golfing he can't have been golfing we can't have been golfing you can't have been golfing they can't have been golfing

Interrogative form

Simple form	V-ing form
can I golf? can you golf? can he golf? can we golf? can you golf? can they golf?	can I be golfing? can you be golfing? can he be golfing? can we be golfing? can you be golfing? can they be golfing?
Perfect	V-ing perfect
can I have golfed? can you have golfed? can he have golfed? can we have golfed? can you have golfed? can they have golfed?	can I have been golfing? can you have been golfing? can he have been golfing? can we have been golfing? can you have been golfing? can they have been golfing?

Interro-negative form

Simple form	V-ing form
can't I golf? can't you golf? can't he golf? can't we golf? can't you golf? can't they golf?	can't I be golfing? can't you be golfing? can't he be golfing? can't we be golfing? can't you be golfing? can't they be golfing?
Perfect	V-ing perfect
can't I have golfed? can't you have golfed? can't he have golfed? can't we have golfed? can't you have golfed? can't they have golfed?	can't I have been golfing? can't you have been golfing? can't he have been golfing? can't we have been golfing? can't you have been golfing? can't they have been golfing?