must excavate
Verbo regular: excavate - excavated- excavated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must excavate
you must excavate
he must excavate
we must excavate
you must excavate
they must excavate 	I must be excavating
you must be excavating
he must be excavating
we must be excavating
you must be excavating
they must be excavating	I must have excavated
you must have excavated
he must have excavated
we must have excavated
you must have excavated
they must have excavated	I must have been excavating
you must have been excavating
he must have been excavating
we must have been excavating
you must have been excavating
they must have been excavating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not excavate
you must not excavate
he must not excavate
we must not excavate
you must not excavate
they must not excavate 	I must not be excavating
you must not be excavating
he must not be excavating
we must not be excavating
you must not be excavating
they must not be excavating	I must not have excavated
you must not have excavated
he must not have excavated
we must not have excavated
you must not have excavated
they must not have excavated	I must not have been excavating
you must not have been excavating
he must not have been excavating
we must not have been excavating
you must not have been excavating
they must not have been excavating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I excavate?
must you excavate?
must he excavate?
must we excavate?
must you excavate?
must they excavate? 	must I be excavating?
must you be excavating?
must he be excavating?
must we be excavating?
must you be excavating?
must they be excavating? 	must I have excavated?
must you have excavated?
must he have excavated?
must we have excavated?
must you have excavated?
must they have excavated? 	must I have been excavating?
must you have been excavating?
must he have been excavating?
must we have been excavating?
must you have been excavating?
must they have been excavating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not excavate?
must you not excavate?
must he not excavate?
must we not excavate?
must you not excavate?
must they not excavate? 	must I not be excavating?
must you not be excavating?
must he not be excavating?
must we not be excavating?
must you not be excavating?
must they not be excavating? 	must I not have excavated?
must you not have excavated?
must he not have excavated?
must we not have excavated?
must you not have excavated?
must they not have excavated? 	must I not have been excavating?
must you not have been excavating?
must he not have been excavating?
must we not have been excavating?
must you not have been excavating?
must they not have been excavating?