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 can't duck you can't duck he can't duck we can't duck you can't duck they can't duck	I can't be ducking you can't be ducking he can't be ducking we can't be ducking you can't be ducking they can't be ducking
Perfeito	Perfeito com V-ing
I can't have ducked you can't have ducked he can't have ducked we can't have ducked you can't have ducked they can't have ducked	I can't have been ducking you can't have been ducking he can't have been ducking we can't have been ducking you can't have been ducking they can't 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't I duck? can't you duck? can't he duck? can't we duck? can't you duck? can't they duck?	can't I be ducking? can't you be ducking? can't he be ducking? can't we be ducking? can't you be ducking? can't they be ducking?
Perfeito	Perfeito com V-ing
can't I have ducked? can't you have ducked? can't he have ducked? can't we have ducked? can't you have ducked? can't they have ducked?	can't I have been ducking? can't you have been ducking? can't he have been ducking? can't we have been ducking? can't you have been ducking? can't they have been ducking?