must help
Verbo regular: help - helped- helped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must help
you must help
she must help
we must help
you must help
they must help 	I must be helping
you must be helping
she must be helping
we must be helping
you must be helping
they must be helping	I must have helped
you must have helped
she must have helped
we must have helped
you must have helped
they must have helped	I must have been helping
you must have been helping
she must have been helping
we must have been helping
you must have been helping
they must have been helping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't help
you mustn't help
she mustn't help
we mustn't help
you mustn't help
they mustn't help 	I mustn't be helping
you mustn't be helping
she mustn't be helping
we mustn't be helping
you mustn't be helping
they mustn't be helping	I mustn't have helped
you mustn't have helped
she mustn't have helped
we mustn't have helped
you mustn't have helped
they mustn't have helped	I mustn't have been helping
you mustn't have been helping
she mustn't have been helping
we mustn't have been helping
you mustn't have been helping
they mustn't have been helping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I help?
must you help?
must she help?
must we help?
must you help?
must they help? 	must I be helping?
must you be helping?
must she be helping?
must we be helping?
must you be helping?
must they be helping? 	must I have helped?
must you have helped?
must she have helped?
must we have helped?
must you have helped?
must they have helped? 	must I have been helping?
must you have been helping?
must she have been helping?
must we have been helping?
must you have been helping?
must they have been helping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I help?
mustn't you help?
mustn't she help?
mustn't we help?
mustn't you help?
mustn't they help? 	mustn't I be helping?
mustn't you be helping?
mustn't she be helping?
mustn't we be helping?
mustn't you be helping?
mustn't they be helping? 	mustn't I have helped?
mustn't you have helped?
mustn't she have helped?
mustn't we have helped?
mustn't you have helped?
mustn't they have helped? 	mustn't I have been helping?
mustn't you have been helping?
mustn't she have been helping?
mustn't we have been helping?
mustn't you have been helping?
mustn't they have been helping?