Conjugação do verbo inglês
CAN DUCK

Verbo regular: duck - ducked - ducked

Afirmação

Forma simple	Forma com V-ing
I can duck you can duck he can duck we can duck you can duck they can duck	I can be ducking you can be ducking he can be ducking we can be ducking you can be ducking they can be ducking
Perfeito	Perfeito com V-ing
I can have ducked you can have ducked he can have ducked we can have ducked you can have ducked they can have ducked	I can have been ducking you can have been ducking he can have been ducking we can have been ducking you can have been ducking they can have been ducking

Negação

Forma simple	Forma com V-ing
I cannot duck you cannot duck he cannot duck we cannot duck you cannot duck they cannot duck	I cannot be ducking you cannot be ducking he cannot be ducking we cannot be ducking you cannot be ducking they cannot be ducking
Perfeito	Perfeito com V-ing
I cannot have ducked you cannot have ducked he cannot have ducked we cannot have ducked you cannot have ducked they cannot have ducked	I cannot have been ducking you cannot have been ducking he cannot have been ducking we cannot have been ducking you cannot have been ducking they cannot have been ducking

Forma interrogativa

Forma simple	Forma com V-ing
can I duck? can you duck? can he duck? can we duck? can you duck? can they duck?	can I be ducking? can you be ducking? can he be ducking? can we be ducking? can you be ducking? can they be ducking?
Perfeito	Perfeito com V-ing
can I have ducked? can you have ducked? can he have ducked? can we have ducked? can you have ducked? can they have ducked?	can I have been ducking? can you have been ducking? can he have been ducking? can we have been ducking? can you have been ducking? can they have been ducking?

Forma interro-Negação

Forma simple	Forma com V-ing
can I not duck? can you not duck? can he not duck? can we not duck? can you not duck? can they not duck?	can I not be ducking? can you not be ducking? can he not be ducking? can we not be ducking? can you not be ducking? can they not be ducking?
Perfeito	Perfeito com V-ing
can I not have ducked? can you not have ducked? can he not have ducked? can we not have ducked? can you not have ducked? can they not have ducked?	can I not have been ducking? can you not have been ducking? can he not have been ducking? can we not have been ducking? can you not have been ducking? can they not have been ducking?