English verb conjugation
CAN DRINK

Irregular verb: drink - drank - drunk

Affirmation

Simple form	V-ing form
I can drink you can drink he can drink we can drink you can drink they can drink	I can be drinking you can be drinking he can be drinking we can be drinking you can be drinking they can be drinking
Perfect	V-ing perfect
I can have drunk you can have drunk he can have drunk we can have drunk you can have drunk they can have drunk	I can have been drinking you can have been drinking he can have been drinking we can have been drinking you can have been drinking they can have been drinking

Negation

Simple form	V-ing form
I can't drink you can't drink he can't drink we can't drink you can't drink they can't drink	I can't be drinking you can't be drinking he can't be drinking we can't be drinking you can't be drinking they can't be drinking
Perfect	V-ing perfect
I can't have drunk you can't have drunk he can't have drunk we can't have drunk you can't have drunk they can't have drunk	I can't have been drinking you can't have been drinking he can't have been drinking we can't have been drinking you can't have been drinking they can't have been drinking

Interrogative form

Simple form	V-ing form
can I drink? can you drink? can he drink? can we drink? can you drink? can they drink?	can I be drinking? can you be drinking? can he be drinking? can we be drinking? can you be drinking? can they be drinking?
Perfect	V-ing perfect
can I have drunk? can you have drunk? can he have drunk? can we have drunk? can you have drunk? can they have drunk?	can I have been drinking? can you have been drinking? can he have been drinking? can we have been drinking? can you have been drinking? can they have been drinking?

Interro-negative form

Simple form	V-ing form
can't I drink? can't you drink? can't he drink? can't we drink? can't you drink? can't they drink?	can't I be drinking? can't you be drinking? can't he be drinking? can't we be drinking? can't you be drinking? can't they be drinking?
Perfect	V-ing perfect
can't I have drunk? can't you have drunk? can't he have drunk? can't we have drunk? can't you have drunk? can't they have drunk?	can't I have been drinking? can't you have been drinking? can't he have been drinking? can't we have been drinking? can't you have been drinking? can't they have been drinking?