I must arc you must arc she must arc we must arc you must arc they must arc
Forma com V-ing
I must be arcing you must be arcing she must be arcing we must be arcing you must be arcing they must be arcing
Perfeito
I must have arced you must have arced she must have arced we must have arced you must have arced they must have arced
Perfeito com V-ing
I must have been arcing you must have been arcing she must have been arcing we must have been arcing you must have been arcing they must have been arcing
Negação
Forma simple
I must not arc you must not arc she must not arc we must not arc you must not arc they must not arc
Forma com V-ing
I must not be arcing you must not be arcing she must not be arcing we must not be arcing you must not be arcing they must not be arcing
Perfeito
I must not have arced you must not have arced she must not have arced we must not have arced you must not have arced they must not have arced
Perfeito com V-ing
I must not have been arcing you must not have been arcing she must not have been arcing we must not have been arcing you must not have been arcing they must not have been arcing
Forma interrogativa
Forma simple
must I arc? must you arc? must she arc? must we arc? must you arc? must they arc?
Forma com V-ing
must I be arcing? must you be arcing? must she be arcing? must we be arcing? must you be arcing? must they be arcing?
Perfeito
must I have arced? must you have arced? must she have arced? must we have arced? must you have arced? must they have arced?
Perfeito com V-ing
must I have been arcing? must you have been arcing? must she have been arcing? must we have been arcing? must you have been arcing? must they have been arcing?
Forma interro-Negação
Forma simple
must I not arc? must you not arc? must she not arc? must we not arc? must you not arc? must they not arc?
Forma com V-ing
must I not be arcing? must you not be arcing? must she not be arcing? must we not be arcing? must you not be arcing? must they not be arcing?
Perfeito
must I not have arced? must you not have arced? must she not have arced? must we not have arced? must you not have arced? must they not have arced?
Perfeito com V-ing
must I not have been arcing? must you not have been arcing? must she not have been arcing? must we not have been arcing? must you not have been arcing? must they not have been arcing?