Conjugação do verbo inglês
COULD TINKER

Verbo regular: tinker - tinkered - tinkered

Afirmação

Forma simple	Forma com V-ing
I could tinker you could tinker he could tinker we could tinker you could tinker they could tinker	I could be tinkering you could be tinkering he could be tinkering we could be tinkering you could be tinkering they could be tinkering
Perfeito	Perfeito com V-ing
I could have tinkered you could have tinkered he could have tinkered we could have tinkered you could have tinkered they could have tinkered	I could have been tinkering you could have been tinkering he could have been tinkering we could have been tinkering you could have been tinkering they could have been tinkering

Negação

Forma simple	Forma com V-ing
I couldn't tinker you couldn't tinker he couldn't tinker we couldn't tinker you couldn't tinker they couldn't tinker	I couldn't be tinkering you couldn't be tinkering he couldn't be tinkering we couldn't be tinkering you couldn't be tinkering they couldn't be tinkering
Perfeito	Perfeito com V-ing
I couldn't have tinkered you couldn't have tinkered he couldn't have tinkered we couldn't have tinkered you couldn't have tinkered they couldn't have tinkered	I couldn't have been tinkering you couldn't have been tinkering he couldn't have been tinkering we couldn't have been tinkering you couldn't have been tinkering they couldn't have been tinkering

Forma interrogativa

Forma simple	Forma com V-ing
could I tinker? could you tinker? could he tinker? could we tinker? could you tinker? could they tinker?	could I be tinkering? could you be tinkering? could he be tinkering? could we be tinkering? could you be tinkering? could they be tinkering?
Perfeito	Perfeito com V-ing
could I have tinkered? could you have tinkered? could he have tinkered? could we have tinkered? could you have tinkered? could they have tinkered?	could I have been tinkering? could you have been tinkering? could he have been tinkering? could we have been tinkering? could you have been tinkering? could they have been tinkering?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I tinker? couldn't you tinker? couldn't he tinker? couldn't we tinker? couldn't you tinker? couldn't they tinker?	couldn't I be tinkering? couldn't you be tinkering? couldn't he be tinkering? couldn't we be tinkering? couldn't you be tinkering? couldn't they be tinkering?
Perfeito	Perfeito com V-ing
couldn't I have tinkered? couldn't you have tinkered? couldn't he have tinkered? couldn't we have tinkered? couldn't you have tinkered? couldn't they have tinkered?	couldn't I have been tinkering? couldn't you have been tinkering? couldn't he have been tinkering? couldn't we have been tinkering? couldn't you have been tinkering? couldn't they have been tinkering?