shall quack
Verbo regular: quack - quacked- quacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall quack
you shall quack
he shall quack
we shall quack
you shall quack
they shall quack 	I shall be quacking
you shall be quacking
he shall be quacking
we shall be quacking
you shall be quacking
they shall be quacking	I shall have quacked
you shall have quacked
he shall have quacked
we shall have quacked
you shall have quacked
they shall have quacked	I shall have been quacking
you shall have been quacking
he shall have been quacking
we shall have been quacking
you shall have been quacking
they shall have been quacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall not quack
you shall not quack
he shall not quack
we shall not quack
you shall not quack
they shall not quack 	I shall not be quacking
you shall not be quacking
he shall not be quacking
we shall not be quacking
you shall not be quacking
they shall not be quacking	I shall not have quacked
you shall not have quacked
he shall not have quacked
we shall not have quacked
you shall not have quacked
they shall not have quacked	I shall not have been quacking
you shall not have been quacking
he shall not have been quacking
we shall not have been quacking
you shall not have been quacking
they shall not have been quacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I quack?
shall you quack?
shall he quack?
shall we quack?
shall you quack?
shall they quack? 	shall I be quacking?
shall you be quacking?
shall he be quacking?
shall we be quacking?
shall you be quacking?
shall they be quacking? 	shall I have quacked?
shall you have quacked?
shall he have quacked?
shall we have quacked?
shall you have quacked?
shall they have quacked? 	shall I have been quacking?
shall you have been quacking?
shall he have been quacking?
shall we have been quacking?
shall you have been quacking?
shall they have been quacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I not quack?
shall you not quack?
shall he not quack?
shall we not quack?
shall you not quack?
shall they not quack? 	shall I not be quacking?
shall you not be quacking?
shall he not be quacking?
shall we not be quacking?
shall you not be quacking?
shall they not be quacking? 	shall I not have quacked?
shall you not have quacked?
shall he not have quacked?
shall we not have quacked?
shall you not have quacked?
shall they not have quacked? 	shall I not have been quacking?
shall you not have been quacking?
shall he not have been quacking?
shall we not have been quacking?
shall you not have been quacking?
shall they not have been quacking?