I can enthuse you can enthuse he can enthuse we can enthuse you can enthuse they can enthuse
V-ing form
I can be enthusing you can be enthusing he can be enthusing we can be enthusing you can be enthusing they can be enthusing
Perfect
I can have enthused you can have enthused he can have enthused we can have enthused you can have enthused they can have enthused
V-ing perfect
I can have been enthusing you can have been enthusing he can have been enthusing we can have been enthusing you can have been enthusing they can have been enthusing
Negation
Simple form
I can't enthuse you can't enthuse he can't enthuse we can't enthuse you can't enthuse they can't enthuse
V-ing form
I can't be enthusing you can't be enthusing he can't be enthusing we can't be enthusing you can't be enthusing they can't be enthusing
Perfect
I can't have enthused you can't have enthused he can't have enthused we can't have enthused you can't have enthused they can't have enthused
V-ing perfect
I can't have been enthusing you can't have been enthusing he can't have been enthusing we can't have been enthusing you can't have been enthusing they can't have been enthusing
Interrogative form
Simple form
can I enthuse? can you enthuse? can he enthuse? can we enthuse? can you enthuse? can they enthuse?
V-ing form
can I be enthusing? can you be enthusing? can he be enthusing? can we be enthusing? can you be enthusing? can they be enthusing?
Perfect
can I have enthused? can you have enthused? can he have enthused? can we have enthused? can you have enthused? can they have enthused?
V-ing perfect
can I have been enthusing? can you have been enthusing? can he have been enthusing? can we have been enthusing? can you have been enthusing? can they have been enthusing?
Interro-negative form
Simple form
can't I enthuse? can't you enthuse? can't he enthuse? can't we enthuse? can't you enthuse? can't they enthuse?
V-ing form
can't I be enthusing? can't you be enthusing? can't he be enthusing? can't we be enthusing? can't you be enthusing? can't they be enthusing?
Perfect
can't I have enthused? can't you have enthused? can't he have enthused? can't we have enthused? can't you have enthused? can't they have enthused?
V-ing perfect
can't I have been enthusing? can't you have been enthusing? can't he have been enthusing? can't we have been enthusing? can't you have been enthusing? can't they have been enthusing?