Conjugación del verbo inglés
MUST FURROW

Verbo regular: furrow - furrowed - furrowed

Afirmación

Forma simple	Forma con V-ing
I must furrow you must furrow she must furrow we must furrow you must furrow they must furrow	I must be furrowing you must be furrowing she must be furrowing we must be furrowing you must be furrowing they must be furrowing
Perfecto	Perfecto con V-ing
I must have furrowed you must have furrowed she must have furrowed we must have furrowed you must have furrowed they must have furrowed	I must have been furrowing you must have been furrowing she must have been furrowing we must have been furrowing you must have been furrowing they must have been furrowing

Negación

Forma simple	Forma con V-ing
I must not furrow you must not furrow she must not furrow we must not furrow you must not furrow they must not furrow	I must not be furrowing you must not be furrowing she must not be furrowing we must not be furrowing you must not be furrowing they must not be furrowing
Perfecto	Perfecto con V-ing
I must not have furrowed you must not have furrowed she must not have furrowed we must not have furrowed you must not have furrowed they must not have furrowed	I must not have been furrowing you must not have been furrowing she must not have been furrowing we must not have been furrowing you must not have been furrowing they must not have been furrowing

Forma interrogativa

Forma simple	Forma con V-ing
must I furrow? must you furrow? must she furrow? must we furrow? must you furrow? must they furrow?	must I be furrowing? must you be furrowing? must she be furrowing? must we be furrowing? must you be furrowing? must they be furrowing?
Perfecto	Perfecto con V-ing
must I have furrowed? must you have furrowed? must she have furrowed? must we have furrowed? must you have furrowed? must they have furrowed?	must I have been furrowing? must you have been furrowing? must she have been furrowing? must we have been furrowing? must you have been furrowing? must they have been furrowing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not furrow? must you not furrow? must she not furrow? must we not furrow? must you not furrow? must they not furrow?	must I not be furrowing? must you not be furrowing? must she not be furrowing? must we not be furrowing? must you not be furrowing? must they not be furrowing?
Perfecto	Perfecto con V-ing
must I not have furrowed? must you not have furrowed? must she not have furrowed? must we not have furrowed? must you not have furrowed? must they not have furrowed?	must I not have been furrowing? must you not have been furrowing? must she not have been furrowing? must we not have been furrowing? must you not have been furrowing? must they not have been furrowing?