Conjugação do verbo inglês
CAN CONCENTRATE

Verbo regular: concentrate - concentrated - concentrated

Afirmação

Forma simple	Forma com V-ing
I can concentrate you can concentrate she can concentrate we can concentrate you can concentrate they can concentrate	I can be concentrating you can be concentrating she can be concentrating we can be concentrating you can be concentrating they can be concentrating
Perfeito	Perfeito com V-ing
I can have concentrated you can have concentrated she can have concentrated we can have concentrated you can have concentrated they can have concentrated	I can have been concentrating you can have been concentrating she can have been concentrating we can have been concentrating you can have been concentrating they can have been concentrating

Negação

Forma simple	Forma com V-ing
I can't concentrate you can't concentrate she can't concentrate we can't concentrate you can't concentrate they can't concentrate	I can't be concentrating you can't be concentrating she can't be concentrating we can't be concentrating you can't be concentrating they can't be concentrating
Perfeito	Perfeito com V-ing
I can't have concentrated you can't have concentrated she can't have concentrated we can't have concentrated you can't have concentrated they can't have concentrated	I can't have been concentrating you can't have been concentrating she can't have been concentrating we can't have been concentrating you can't have been concentrating they can't have been concentrating

Forma interrogativa

Forma simple	Forma com V-ing
can I concentrate? can you concentrate? can she concentrate? can we concentrate? can you concentrate? can they concentrate?	can I be concentrating? can you be concentrating? can she be concentrating? can we be concentrating? can you be concentrating? can they be concentrating?
Perfeito	Perfeito com V-ing
can I have concentrated? can you have concentrated? can she have concentrated? can we have concentrated? can you have concentrated? can they have concentrated?	can I have been concentrating? can you have been concentrating? can she have been concentrating? can we have been concentrating? can you have been concentrating? can they have been concentrating?

Forma interro-Negação

Forma simple	Forma com V-ing
can't I concentrate? can't you concentrate? can't she concentrate? can't we concentrate? can't you concentrate? can't they concentrate?	can't I be concentrating? can't you be concentrating? can't she be concentrating? can't we be concentrating? can't you be concentrating? can't they be concentrating?
Perfeito	Perfeito com V-ing
can't I have concentrated? can't you have concentrated? can't she have concentrated? can't we have concentrated? can't you have concentrated? can't they have concentrated?	can't I have been concentrating? can't you have been concentrating? can't she have been concentrating? can't we have been concentrating? can't you have been concentrating? can't they have been concentrating?