Conjugação do verbo inglês
MUST BACKFIT

Verbo irregular: backfit - backfit, backfitted - backfit, backfitted

Afirmação

Forma simple	Forma com V-ing
I must backfit you must backfit he must backfit we must backfit you must backfit they must backfit	I must be backfiting you must be backfiting he must be backfiting we must be backfiting you must be backfiting they must be backfiting
Perfeito	Perfeito com V-ing
I must have backfit, backfitted you must have backfit, backfitted he must have backfit, backfitted we must have backfit, backfitted you must have backfit, backfitted they must have backfit, backfitted	I must have been backfiting you must have been backfiting he must have been backfiting we must have been backfiting you must have been backfiting they must have been backfiting

Negação

Forma simple	Forma com V-ing
I must not backfit you must not backfit he must not backfit we must not backfit you must not backfit they must not backfit	I must not be backfiting you must not be backfiting he must not be backfiting we must not be backfiting you must not be backfiting they must not be backfiting
Perfeito	Perfeito com V-ing
I must not have backfit, backfitted you must not have backfit, backfitted he must not have backfit, backfitted we must not have backfit, backfitted you must not have backfit, backfitted they must not have backfit, backfitted	I must not have been backfiting you must not have been backfiting he must not have been backfiting we must not have been backfiting you must not have been backfiting they must not have been backfiting

Forma interrogativa

Forma simple	Forma com V-ing
must I backfit? must you backfit? must he backfit? must we backfit? must you backfit? must they backfit?	must I be backfiting? must you be backfiting? must he be backfiting? must we be backfiting? must you be backfiting? must they be backfiting?
Perfeito	Perfeito com V-ing
must I have backfit, backfitted? must you have backfit, backfitted? must he have backfit, backfitted? must we have backfit, backfitted? must you have backfit, backfitted? must they have backfit, backfitted?	must I have been backfiting? must you have been backfiting? must he have been backfiting? must we have been backfiting? must you have been backfiting? must they have been backfiting?

Forma interro-Negação

Forma simple	Forma com V-ing
must I not backfit? must you not backfit? must he not backfit? must we not backfit? must you not backfit? must they not backfit?	must I not be backfiting? must you not be backfiting? must he not be backfiting? must we not be backfiting? must you not be backfiting? must they not be backfiting?
Perfeito	Perfeito com V-ing
must I not have backfit, backfitted? must you not have backfit, backfitted? must he not have backfit, backfitted? must we not have backfit, backfitted? must you not have backfit, backfitted? must they not have backfit, backfitted?	must I not have been backfiting? must you not have been backfiting? must he not have been backfiting? must we not have been backfiting? must you not have been backfiting? must they not have been backfiting?