I can enthuse you can enthuse she can enthuse we can enthuse you can enthuse they can enthuse
V-ing form
I can be enthusing you can be enthusing she can be enthusing we can be enthusing you can be enthusing they can be enthusing
Perfect
I can have enthused you can have enthused she 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 she can have been enthusing we can have been enthusing you can have been enthusing they can have been enthusing
Negation
Simple form
I cannot enthuse you cannot enthuse she cannot enthuse we cannot enthuse you cannot enthuse they cannot enthuse
V-ing form
I cannot be enthusing you cannot be enthusing she cannot be enthusing we cannot be enthusing you cannot be enthusing they cannot be enthusing
Perfect
I cannot have enthused you cannot have enthused she cannot have enthused we cannot have enthused you cannot have enthused they cannot have enthused
V-ing perfect
I cannot have been enthusing you cannot have been enthusing she cannot have been enthusing we cannot have been enthusing you cannot have been enthusing they cannot have been enthusing
Interrogative form
Simple form
can I enthuse? can you enthuse? can she enthuse? can we enthuse? can you enthuse? can they enthuse?
V-ing form
can I be enthusing? can you be enthusing? can she be enthusing? can we be enthusing? can you be enthusing? can they be enthusing?
Perfect
can I have enthused? can you have enthused? can she 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 she have been enthusing? can we have been enthusing? can you have been enthusing? can they have been enthusing?
Interro-negative form
Simple form
can I not enthuse? can you not enthuse? can she not enthuse? can we not enthuse? can you not enthuse? can they not enthuse?
V-ing form
can I not be enthusing? can you not be enthusing? can she not be enthusing? can we not be enthusing? can you not be enthusing? can they not be enthusing?
Perfect
can I not have enthused? can you not have enthused? can she not have enthused? can we not have enthused? can you not have enthused? can they not have enthused?
V-ing perfect
can I not have been enthusing? can you not have been enthusing? can she not have been enthusing? can we not have been enthusing? can you not have been enthusing? can they not have been enthusing?