Conjugación del verbo inglés
MUST CRACK

Verbo regular: crack - cracked - cracked

Afirmación

Forma simple	Forma con V-ing
I must crack you must crack she must crack we must crack you must crack they must crack	I must be cracking you must be cracking she must be cracking we must be cracking you must be cracking they must be cracking
Perfecto	Perfecto con V-ing
I must have cracked you must have cracked she must have cracked we must have cracked you must have cracked they must have cracked	I must have been cracking you must have been cracking she must have been cracking we must have been cracking you must have been cracking they must have been cracking

Negación

Forma simple	Forma con V-ing
I mustn't crack you mustn't crack she mustn't crack we mustn't crack you mustn't crack they mustn't crack	I mustn't be cracking you mustn't be cracking she mustn't be cracking we mustn't be cracking you mustn't be cracking they mustn't be cracking
Perfecto	Perfecto con V-ing
I mustn't have cracked you mustn't have cracked she mustn't have cracked we mustn't have cracked you mustn't have cracked they mustn't have cracked	I mustn't have been cracking you mustn't have been cracking she mustn't have been cracking we mustn't have been cracking you mustn't have been cracking they mustn't have been cracking

Forma interrogativa

Forma simple	Forma con V-ing
must I crack? must you crack? must she crack? must we crack? must you crack? must they crack?	must I be cracking? must you be cracking? must she be cracking? must we be cracking? must you be cracking? must they be cracking?
Perfecto	Perfecto con V-ing
must I have cracked? must you have cracked? must she have cracked? must we have cracked? must you have cracked? must they have cracked?	must I have been cracking? must you have been cracking? must she have been cracking? must we have been cracking? must you have been cracking? must they have been cracking?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I crack? mustn't you crack? mustn't she crack? mustn't we crack? mustn't you crack? mustn't they crack?	mustn't I be cracking? mustn't you be cracking? mustn't she be cracking? mustn't we be cracking? mustn't you be cracking? mustn't they be cracking?
Perfecto	Perfecto con V-ing
mustn't I have cracked? mustn't you have cracked? mustn't she have cracked? mustn't we have cracked? mustn't you have cracked? mustn't they have cracked?	mustn't I have been cracking? mustn't you have been cracking? mustn't she have been cracking? mustn't we have been cracking? mustn't you have been cracking? mustn't they have been cracking?