English verb conjugation
CAN BOO

Regular verb: boo - booed - booed

Affirmation

Simple form	V-ing form
I can boo you can boo he can boo we can boo you can boo they can boo	I can be booing you can be booing he can be booing we can be booing you can be booing they can be booing
Perfect	V-ing perfect
I can have booed you can have booed he can have booed we can have booed you can have booed they can have booed	I can have been booing you can have been booing he can have been booing we can have been booing you can have been booing they can have been booing

Negation

Simple form	V-ing form
I can't boo you can't boo he can't boo we can't boo you can't boo they can't boo	I can't be booing you can't be booing he can't be booing we can't be booing you can't be booing they can't be booing
Perfect	V-ing perfect
I can't have booed you can't have booed he can't have booed we can't have booed you can't have booed they can't have booed	I can't have been booing you can't have been booing he can't have been booing we can't have been booing you can't have been booing they can't have been booing

Interrogative form

Simple form	V-ing form
can I boo? can you boo? can he boo? can we boo? can you boo? can they boo?	can I be booing? can you be booing? can he be booing? can we be booing? can you be booing? can they be booing?
Perfect	V-ing perfect
can I have booed? can you have booed? can he have booed? can we have booed? can you have booed? can they have booed?	can I have been booing? can you have been booing? can he have been booing? can we have been booing? can you have been booing? can they have been booing?

Interro-negative form

Simple form	V-ing form
can't I boo? can't you boo? can't he boo? can't we boo? can't you boo? can't they boo?	can't I be booing? can't you be booing? can't he be booing? can't we be booing? can't you be booing? can't they be booing?
Perfect	V-ing perfect
can't I have booed? can't you have booed? can't he have booed? can't we have booed? can't you have booed? can't they have booed?	can't I have been booing? can't you have been booing? can't he have been booing? can't we have been booing? can't you have been booing? can't they have been booing?