I can enjoy you can enjoy he can enjoy we can enjoy you can enjoy they can enjoy
V-ing form
I can be enjoying you can be enjoying he can be enjoying we can be enjoying you can be enjoying they can be enjoying
Perfect
I can have enjoyed you can have enjoyed he can have enjoyed we can have enjoyed you can have enjoyed they can have enjoyed
V-ing perfect
I can have been enjoying you can have been enjoying he can have been enjoying we can have been enjoying you can have been enjoying they can have been enjoying
Negation
Simple form
I can't enjoy you can't enjoy he can't enjoy we can't enjoy you can't enjoy they can't enjoy
V-ing form
I can't be enjoying you can't be enjoying he can't be enjoying we can't be enjoying you can't be enjoying they can't be enjoying
Perfect
I can't have enjoyed you can't have enjoyed he can't have enjoyed we can't have enjoyed you can't have enjoyed they can't have enjoyed
V-ing perfect
I can't have been enjoying you can't have been enjoying he can't have been enjoying we can't have been enjoying you can't have been enjoying they can't have been enjoying
Interrogative form
Simple form
can I enjoy? can you enjoy? can he enjoy? can we enjoy? can you enjoy? can they enjoy?
V-ing form
can I be enjoying? can you be enjoying? can he be enjoying? can we be enjoying? can you be enjoying? can they be enjoying?
Perfect
can I have enjoyed? can you have enjoyed? can he have enjoyed? can we have enjoyed? can you have enjoyed? can they have enjoyed?
V-ing perfect
can I have been enjoying? can you have been enjoying? can he have been enjoying? can we have been enjoying? can you have been enjoying? can they have been enjoying?
Interro-negative form
Simple form
can't I enjoy? can't you enjoy? can't he enjoy? can't we enjoy? can't you enjoy? can't they enjoy?
V-ing form
can't I be enjoying? can't you be enjoying? can't he be enjoying? can't we be enjoying? can't you be enjoying? can't they be enjoying?
Perfect
can't I have enjoyed? can't you have enjoyed? can't he have enjoyed? can't we have enjoyed? can't you have enjoyed? can't they have enjoyed?
V-ing perfect
can't I have been enjoying? can't you have been enjoying? can't he have been enjoying? can't we have been enjoying? can't you have been enjoying? can't they have been enjoying?