must intern
Verbo regular: intern - interned- interned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must intern
you must intern
she must intern
we must intern
you must intern
they must intern 	I must be interning
you must be interning
she must be interning
we must be interning
you must be interning
they must be interning	I must have interned
you must have interned
she must have interned
we must have interned
you must have interned
they must have interned	I must have been interning
you must have been interning
she must have been interning
we must have been interning
you must have been interning
they must have been interning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not intern
you must not intern
she must not intern
we must not intern
you must not intern
they must not intern 	I must not be interning
you must not be interning
she must not be interning
we must not be interning
you must not be interning
they must not be interning	I must not have interned
you must not have interned
she must not have interned
we must not have interned
you must not have interned
they must not have interned	I must not have been interning
you must not have been interning
she must not have been interning
we must not have been interning
you must not have been interning
they must not have been interning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I intern?
must you intern?
must she intern?
must we intern?
must you intern?
must they intern? 	must I be interning?
must you be interning?
must she be interning?
must we be interning?
must you be interning?
must they be interning? 	must I have interned?
must you have interned?
must she have interned?
must we have interned?
must you have interned?
must they have interned? 	must I have been interning?
must you have been interning?
must she have been interning?
must we have been interning?
must you have been interning?
must they have been interning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not intern?
must you not intern?
must she not intern?
must we not intern?
must you not intern?
must they not intern? 	must I not be interning?
must you not be interning?
must she not be interning?
must we not be interning?
must you not be interning?
must they not be interning? 	must I not have interned?
must you not have interned?
must she not have interned?
must we not have interned?
must you not have interned?
must they not have interned? 	must I not have been interning?
must you not have been interning?
must she not have been interning?
must we not have been interning?
must you not have been interning?
must they not have been interning?