can tax
Verbo regular: tax - taxed- taxed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can tax
you can tax
he can tax
we can tax
you can tax
they can tax 	I can be taxing
you can be taxing
he can be taxing
we can be taxing
you can be taxing
they can be taxing	I can have taxed
you can have taxed
he can have taxed
we can have taxed
you can have taxed
they can have taxed	I can have been taxing
you can have been taxing
he can have been taxing
we can have been taxing
you can have been taxing
they can have been taxing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot tax
you cannot tax
he cannot tax
we cannot tax
you cannot tax
they cannot tax 	I cannot be taxing
you cannot be taxing
he cannot be taxing
we cannot be taxing
you cannot be taxing
they cannot be taxing	I cannot have taxed
you cannot have taxed
he cannot have taxed
we cannot have taxed
you cannot have taxed
they cannot have taxed	I cannot have been taxing
you cannot have been taxing
he cannot have been taxing
we cannot have been taxing
you cannot have been taxing
they cannot have been taxing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I tax?
can you tax?
can he tax?
can we tax?
can you tax?
can they tax? 	can I be taxing?
can you be taxing?
can he be taxing?
can we be taxing?
can you be taxing?
can they be taxing? 	can I have taxed?
can you have taxed?
can he have taxed?
can we have taxed?
can you have taxed?
can they have taxed? 	can I have been taxing?
can you have been taxing?
can he have been taxing?
can we have been taxing?
can you have been taxing?
can they have been taxing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not tax?
can you not tax?
can he not tax?
can we not tax?
can you not tax?
can they not tax? 	can I not be taxing?
can you not be taxing?
can he not be taxing?
can we not be taxing?
can you not be taxing?
can they not be taxing? 	can I not have taxed?
can you not have taxed?
can he not have taxed?
can we not have taxed?
can you not have taxed?
can they not have taxed? 	can I not have been taxing?
can you not have been taxing?
can he not have been taxing?
can we not have been taxing?
can you not have been taxing?
can they not have been taxing?