English verb conjugation
COULD ENTHUSE

Regular verb: enthuse - enthused - enthused

Affirmation

Simple form	V-ing form
I could enthuse you could enthuse she could enthuse we could enthuse you could enthuse they could enthuse	I could be enthusing you could be enthusing she could be enthusing we could be enthusing you could be enthusing they could be enthusing
Perfect	V-ing perfect
I could have enthused you could have enthused she could have enthused we could have enthused you could have enthused they could have enthused	I could have been enthusing you could have been enthusing she could have been enthusing we could have been enthusing you could have been enthusing they could have been enthusing

Negation

Simple form	V-ing form
I couldn't enthuse you couldn't enthuse she couldn't enthuse we couldn't enthuse you couldn't enthuse they couldn't enthuse	I couldn't be enthusing you couldn't be enthusing she couldn't be enthusing we couldn't be enthusing you couldn't be enthusing they couldn't be enthusing
Perfect	V-ing perfect
I couldn't have enthused you couldn't have enthused she couldn't have enthused we couldn't have enthused you couldn't have enthused they couldn't have enthused	I couldn't have been enthusing you couldn't have been enthusing she couldn't have been enthusing we couldn't have been enthusing you couldn't have been enthusing they couldn't have been enthusing

Interrogative form

Simple form	V-ing form
could I enthuse? could you enthuse? could she enthuse? could we enthuse? could you enthuse? could they enthuse?	could I be enthusing? could you be enthusing? could she be enthusing? could we be enthusing? could you be enthusing? could they be enthusing?
Perfect	V-ing perfect
could I have enthused? could you have enthused? could she have enthused? could we have enthused? could you have enthused? could they have enthused?	could I have been enthusing? could you have been enthusing? could she have been enthusing? could we have been enthusing? could you have been enthusing? could they have been enthusing?

Interro-negative form

Simple form	V-ing form
couldn't I enthuse? couldn't you enthuse? couldn't she enthuse? couldn't we enthuse? couldn't you enthuse? couldn't they enthuse?	couldn't I be enthusing? couldn't you be enthusing? couldn't she be enthusing? couldn't we be enthusing? couldn't you be enthusing? couldn't they be enthusing?
Perfect	V-ing perfect
couldn't I have enthused? couldn't you have enthused? couldn't she have enthused? couldn't we have enthused? couldn't you have enthused? couldn't they have enthused?	couldn't I have been enthusing? couldn't you have been enthusing? couldn't she have been enthusing? couldn't we have been enthusing? couldn't you have been enthusing? couldn't they have been enthusing?