must prewash
Verbo regular: prewash - prewashed- prewashed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prewash
you must prewash
she must prewash
we must prewash
you must prewash
they must prewash 	I must be prewashing
you must be prewashing
she must be prewashing
we must be prewashing
you must be prewashing
they must be prewashing	I must have prewashed
you must have prewashed
she must have prewashed
we must have prewashed
you must have prewashed
they must have prewashed	I must have been prewashing
you must have been prewashing
she must have been prewashing
we must have been prewashing
you must have been prewashing
they must have been prewashing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prewash
you must not prewash
she must not prewash
we must not prewash
you must not prewash
they must not prewash 	I must not be prewashing
you must not be prewashing
she must not be prewashing
we must not be prewashing
you must not be prewashing
they must not be prewashing	I must not have prewashed
you must not have prewashed
she must not have prewashed
we must not have prewashed
you must not have prewashed
they must not have prewashed	I must not have been prewashing
you must not have been prewashing
she must not have been prewashing
we must not have been prewashing
you must not have been prewashing
they must not have been prewashing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prewash?
must you prewash?
must she prewash?
must we prewash?
must you prewash?
must they prewash? 	must I be prewashing?
must you be prewashing?
must she be prewashing?
must we be prewashing?
must you be prewashing?
must they be prewashing? 	must I have prewashed?
must you have prewashed?
must she have prewashed?
must we have prewashed?
must you have prewashed?
must they have prewashed? 	must I have been prewashing?
must you have been prewashing?
must she have been prewashing?
must we have been prewashing?
must you have been prewashing?
must they have been prewashing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prewash?
must you not prewash?
must she not prewash?
must we not prewash?
must you not prewash?
must they not prewash? 	must I not be prewashing?
must you not be prewashing?
must she not be prewashing?
must we not be prewashing?
must you not be prewashing?
must they not be prewashing? 	must I not have prewashed?
must you not have prewashed?
must she not have prewashed?
must we not have prewashed?
must you not have prewashed?
must they not have prewashed? 	must I not have been prewashing?
must you not have been prewashing?
must she not have been prewashing?
must we not have been prewashing?
must you not have been prewashing?
must they not have been prewashing?