I can excite you can excite he can excite we can excite you can excite they can excite
V-ing form
I can be exciting you can be exciting he can be exciting we can be exciting you can be exciting they can be exciting
Perfect
I can have excited you can have excited he can have excited we can have excited you can have excited they can have excited
V-ing perfect
I can have been exciting you can have been exciting he can have been exciting we can have been exciting you can have been exciting they can have been exciting
Negation
Simple form
I can't excite you can't excite he can't excite we can't excite you can't excite they can't excite
V-ing form
I can't be exciting you can't be exciting he can't be exciting we can't be exciting you can't be exciting they can't be exciting
Perfect
I can't have excited you can't have excited he can't have excited we can't have excited you can't have excited they can't have excited
V-ing perfect
I can't have been exciting you can't have been exciting he can't have been exciting we can't have been exciting you can't have been exciting they can't have been exciting
Interrogative form
Simple form
can I excite? can you excite? can he excite? can we excite? can you excite? can they excite?
V-ing form
can I be exciting? can you be exciting? can he be exciting? can we be exciting? can you be exciting? can they be exciting?
Perfect
can I have excited? can you have excited? can he have excited? can we have excited? can you have excited? can they have excited?
V-ing perfect
can I have been exciting? can you have been exciting? can he have been exciting? can we have been exciting? can you have been exciting? can they have been exciting?
Interro-negative form
Simple form
can't I excite? can't you excite? can't he excite? can't we excite? can't you excite? can't they excite?
V-ing form
can't I be exciting? can't you be exciting? can't he be exciting? can't we be exciting? can't you be exciting? can't they be exciting?
Perfect
can't I have excited? can't you have excited? can't he have excited? can't we have excited? can't you have excited? can't they have excited?
V-ing perfect
can't I have been exciting? can't you have been exciting? can't he have been exciting? can't we have been exciting? can't you have been exciting? can't they have been exciting?