English verb conjugation
CAN POLISH

Regular verb: polish - polished - polished

Affirmation

Simple form	V-ing form
I can polish you can polish he can polish we can polish you can polish they can polish	I can be polishing you can be polishing he can be polishing we can be polishing you can be polishing they can be polishing
Perfect	V-ing perfect
I can have polished you can have polished he can have polished we can have polished you can have polished they can have polished	I can have been polishing you can have been polishing he can have been polishing we can have been polishing you can have been polishing they can have been polishing

Negation

Simple form	V-ing form
I can't polish you can't polish he can't polish we can't polish you can't polish they can't polish	I can't be polishing you can't be polishing he can't be polishing we can't be polishing you can't be polishing they can't be polishing
Perfect	V-ing perfect
I can't have polished you can't have polished he can't have polished we can't have polished you can't have polished they can't have polished	I can't have been polishing you can't have been polishing he can't have been polishing we can't have been polishing you can't have been polishing they can't have been polishing

Interrogative form

Simple form	V-ing form
can I polish? can you polish? can he polish? can we polish? can you polish? can they polish?	can I be polishing? can you be polishing? can he be polishing? can we be polishing? can you be polishing? can they be polishing?
Perfect	V-ing perfect
can I have polished? can you have polished? can he have polished? can we have polished? can you have polished? can they have polished?	can I have been polishing? can you have been polishing? can he have been polishing? can we have been polishing? can you have been polishing? can they have been polishing?

Interro-negative form

Simple form	V-ing form
can't I polish? can't you polish? can't he polish? can't we polish? can't you polish? can't they polish?	can't I be polishing? can't you be polishing? can't he be polishing? can't we be polishing? can't you be polishing? can't they be polishing?
Perfect	V-ing perfect
can't I have polished? can't you have polished? can't he have polished? can't we have polished? can't you have polished? can't they have polished?	can't I have been polishing? can't you have been polishing? can't he have been polishing? can't we have been polishing? can't you have been polishing? can't they have been polishing?