Conjugação do verbo inglês
CAN SING

Verbo irregular: sing - sang - sung

Afirmação

Forma simple	Forma com V-ing
I can sing you can sing he can sing we can sing you can sing they can sing	I can be singing you can be singing he can be singing we can be singing you can be singing they can be singing
Perfeito	Perfeito com V-ing
I can have sung you can have sung he can have sung we can have sung you can have sung they can have sung	I can have been singing you can have been singing he can have been singing we can have been singing you can have been singing they can have been singing

Negação

Forma simple	Forma com V-ing
I can't sing you can't sing he can't sing we can't sing you can't sing they can't sing	I can't be singing you can't be singing he can't be singing we can't be singing you can't be singing they can't be singing
Perfeito	Perfeito com V-ing
I can't have sung you can't have sung he can't have sung we can't have sung you can't have sung they can't have sung	I can't have been singing you can't have been singing he can't have been singing we can't have been singing you can't have been singing they can't have been singing

Forma interrogativa

Forma simple	Forma com V-ing
can I sing? can you sing? can he sing? can we sing? can you sing? can they sing?	can I be singing? can you be singing? can he be singing? can we be singing? can you be singing? can they be singing?
Perfeito	Perfeito com V-ing
can I have sung? can you have sung? can he have sung? can we have sung? can you have sung? can they have sung?	can I have been singing? can you have been singing? can he have been singing? can we have been singing? can you have been singing? can they have been singing?

Forma interro-Negação

Forma simple	Forma com V-ing
can't I sing? can't you sing? can't he sing? can't we sing? can't you sing? can't they sing?	can't I be singing? can't you be singing? can't he be singing? can't we be singing? can't you be singing? can't they be singing?
Perfeito	Perfeito com V-ing
can't I have sung? can't you have sung? can't he have sung? can't we have sung? can't you have sung? can't they have sung?	can't I have been singing? can't you have been singing? can't he have been singing? can't we have been singing? can't you have been singing? can't they have been singing?