Verbo regular: concentrate - concentrated - concentrated
Afirmação
Forma simple
I must concentrate you must concentrate she must concentrate we must concentrate you must concentrate they must concentrate
Forma com V-ing
I must be concentrating you must be concentrating she must be concentrating we must be concentrating you must be concentrating they must be concentrating
Perfeito
I must have concentrated you must have concentrated she must have concentrated we must have concentrated you must have concentrated they must have concentrated
Perfeito com V-ing
I must have been concentrating you must have been concentrating she must have been concentrating we must have been concentrating you must have been concentrating they must have been concentrating
Negação
Forma simple
I must not concentrate you must not concentrate she must not concentrate we must not concentrate you must not concentrate they must not concentrate
Forma com V-ing
I must not be concentrating you must not be concentrating she must not be concentrating we must not be concentrating you must not be concentrating they must not be concentrating
Perfeito
I must not have concentrated you must not have concentrated she must not have concentrated we must not have concentrated you must not have concentrated they must not have concentrated
Perfeito com V-ing
I must not have been concentrating you must not have been concentrating she must not have been concentrating we must not have been concentrating you must not have been concentrating they must not have been concentrating
Forma interrogativa
Forma simple
must I concentrate? must you concentrate? must she concentrate? must we concentrate? must you concentrate? must they concentrate?
Forma com V-ing
must I be concentrating? must you be concentrating? must she be concentrating? must we be concentrating? must you be concentrating? must they be concentrating?
Perfeito
must I have concentrated? must you have concentrated? must she have concentrated? must we have concentrated? must you have concentrated? must they have concentrated?
Perfeito com V-ing
must I have been concentrating? must you have been concentrating? must she have been concentrating? must we have been concentrating? must you have been concentrating? must they have been concentrating?
Forma interro-Negação
Forma simple
must I not concentrate? must you not concentrate? must she not concentrate? must we not concentrate? must you not concentrate? must they not concentrate?
Forma com V-ing
must I not be concentrating? must you not be concentrating? must she not be concentrating? must we not be concentrating? must you not be concentrating? must they not be concentrating?
Perfeito
must I not have concentrated? must you not have concentrated? must she not have concentrated? must we not have concentrated? must you not have concentrated? must they not have concentrated?
Perfeito com V-ing
must I not have been concentrating? must you not have been concentrating? must she not have been concentrating? must we not have been concentrating? must you not have been concentrating? must they not have been concentrating?