must drain
Verbo regular: drain - drained- drained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must drain
you must drain
he must drain
we must drain
you must drain
they must drain 	I must be draining
you must be draining
he must be draining
we must be draining
you must be draining
they must be draining	I must have drained
you must have drained
he must have drained
we must have drained
you must have drained
they must have drained	I must have been draining
you must have been draining
he must have been draining
we must have been draining
you must have been draining
they must have been draining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not drain
you must not drain
he must not drain
we must not drain
you must not drain
they must not drain 	I must not be draining
you must not be draining
he must not be draining
we must not be draining
you must not be draining
they must not be draining	I must not have drained
you must not have drained
he must not have drained
we must not have drained
you must not have drained
they must not have drained	I must not have been draining
you must not have been draining
he must not have been draining
we must not have been draining
you must not have been draining
they must not have been draining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I drain?
must you drain?
must he drain?
must we drain?
must you drain?
must they drain? 	must I be draining?
must you be draining?
must he be draining?
must we be draining?
must you be draining?
must they be draining? 	must I have drained?
must you have drained?
must he have drained?
must we have drained?
must you have drained?
must they have drained? 	must I have been draining?
must you have been draining?
must he have been draining?
must we have been draining?
must you have been draining?
must they have been draining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not drain?
must you not drain?
must he not drain?
must we not drain?
must you not drain?
must they not drain? 	must I not be draining?
must you not be draining?
must he not be draining?
must we not be draining?
must you not be draining?
must they not be draining? 	must I not have drained?
must you not have drained?
must he not have drained?
must we not have drained?
must you not have drained?
must they not have drained? 	must I not have been draining?
must you not have been draining?
must he not have been draining?
must we not have been draining?
must you not have been draining?
must they not have been draining?