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