Conjugación del verbo inglés
MUST HOWL

Verbo regular: howl - howled - howled

Afirmación

Forma simple	Forma con V-ing
I must howl you must howl he must howl we must howl you must howl they must howl	I must be howling you must be howling he must be howling we must be howling you must be howling they must be howling
Perfecto	Perfecto con V-ing
I must have howled you must have howled he must have howled we must have howled you must have howled they must have howled	I must have been howling you must have been howling he must have been howling we must have been howling you must have been howling they must have been howling

Negación

Forma simple	Forma con V-ing
I mustn't howl you mustn't howl he mustn't howl we mustn't howl you mustn't howl they mustn't howl	I mustn't be howling you mustn't be howling he mustn't be howling we mustn't be howling you mustn't be howling they mustn't be howling
Perfecto	Perfecto con V-ing
I mustn't have howled you mustn't have howled he mustn't have howled we mustn't have howled you mustn't have howled they mustn't have howled	I mustn't have been howling you mustn't have been howling he mustn't have been howling we mustn't have been howling you mustn't have been howling they mustn't have been howling

Forma interrogativa

Forma simple	Forma con V-ing
must I howl? must you howl? must he howl? must we howl? must you howl? must they howl?	must I be howling? must you be howling? must he be howling? must we be howling? must you be howling? must they be howling?
Perfecto	Perfecto con V-ing
must I have howled? must you have howled? must he have howled? must we have howled? must you have howled? must they have howled?	must I have been howling? must you have been howling? must he have been howling? must we have been howling? must you have been howling? must they have been howling?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I howl? mustn't you howl? mustn't he howl? mustn't we howl? mustn't you howl? mustn't they howl?	mustn't I be howling? mustn't you be howling? mustn't he be howling? mustn't we be howling? mustn't you be howling? mustn't they be howling?
Perfecto	Perfecto con V-ing
mustn't I have howled? mustn't you have howled? mustn't he have howled? mustn't we have howled? mustn't you have howled? mustn't they have howled?	mustn't I have been howling? mustn't you have been howling? mustn't he have been howling? mustn't we have been howling? mustn't you have been howling? mustn't they have been howling?