English verb conjugation
CAN CURTSEY

Regular verb: curtsey - curtseyed - curtseyed

Affirmation

Simple form	V-ing form
I can curtsey you can curtsey he can curtsey we can curtsey you can curtsey they can curtsey	I can be curtseying you can be curtseying he can be curtseying we can be curtseying you can be curtseying they can be curtseying
Perfect	V-ing perfect
I can have curtseyed you can have curtseyed he can have curtseyed we can have curtseyed you can have curtseyed they can have curtseyed	I can have been curtseying you can have been curtseying he can have been curtseying we can have been curtseying you can have been curtseying they can have been curtseying

Negation

Simple form	V-ing form
I cannot curtsey you cannot curtsey he cannot curtsey we cannot curtsey you cannot curtsey they cannot curtsey	I cannot be curtseying you cannot be curtseying he cannot be curtseying we cannot be curtseying you cannot be curtseying they cannot be curtseying
Perfect	V-ing perfect
I cannot have curtseyed you cannot have curtseyed he cannot have curtseyed we cannot have curtseyed you cannot have curtseyed they cannot have curtseyed	I cannot have been curtseying you cannot have been curtseying he cannot have been curtseying we cannot have been curtseying you cannot have been curtseying they cannot have been curtseying

Interrogative form

Simple form	V-ing form
can I curtsey? can you curtsey? can he curtsey? can we curtsey? can you curtsey? can they curtsey?	can I be curtseying? can you be curtseying? can he be curtseying? can we be curtseying? can you be curtseying? can they be curtseying?
Perfect	V-ing perfect
can I have curtseyed? can you have curtseyed? can he have curtseyed? can we have curtseyed? can you have curtseyed? can they have curtseyed?	can I have been curtseying? can you have been curtseying? can he have been curtseying? can we have been curtseying? can you have been curtseying? can they have been curtseying?

Interro-negative form

Simple form	V-ing form
can I not curtsey? can you not curtsey? can he not curtsey? can we not curtsey? can you not curtsey? can they not curtsey?	can I not be curtseying? can you not be curtseying? can he not be curtseying? can we not be curtseying? can you not be curtseying? can they not be curtseying?
Perfect	V-ing perfect
can I not have curtseyed? can you not have curtseyed? can he not have curtseyed? can we not have curtseyed? can you not have curtseyed? can they not have curtseyed?	can I not have been curtseying? can you not have been curtseying? can he not have been curtseying? can we not have been curtseying? can you not have been curtseying? can they not have been curtseying?