Conjugación del verbo inglés
COULD YIP

Verbo regular: yip - yipped - yipped

Afirmación

Forma simple	Forma con V-ing
I could yip you could yip he could yip we could yip you could yip they could yip	I could be yipping you could be yipping he could be yipping we could be yipping you could be yipping they could be yipping
Perfecto	Perfecto con V-ing
I could have yipped you could have yipped he could have yipped we could have yipped you could have yipped they could have yipped	I could have been yipping you could have been yipping he could have been yipping we could have been yipping you could have been yipping they could have been yipping

Negación

Forma simple	Forma con V-ing
I couldn't yip you couldn't yip he couldn't yip we couldn't yip you couldn't yip they couldn't yip	I couldn't be yipping you couldn't be yipping he couldn't be yipping we couldn't be yipping you couldn't be yipping they couldn't be yipping
Perfecto	Perfecto con V-ing
I couldn't have yipped you couldn't have yipped he couldn't have yipped we couldn't have yipped you couldn't have yipped they couldn't have yipped	I couldn't have been yipping you couldn't have been yipping he couldn't have been yipping we couldn't have been yipping you couldn't have been yipping they couldn't have been yipping

Forma interrogativa

Forma simple	Forma con V-ing
could I yip? could you yip? could he yip? could we yip? could you yip? could they yip?	could I be yipping? could you be yipping? could he be yipping? could we be yipping? could you be yipping? could they be yipping?
Perfecto	Perfecto con V-ing
could I have yipped? could you have yipped? could he have yipped? could we have yipped? could you have yipped? could they have yipped?	could I have been yipping? could you have been yipping? could he have been yipping? could we have been yipping? could you have been yipping? could they have been yipping?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I yip? couldn't you yip? couldn't he yip? couldn't we yip? couldn't you yip? couldn't they yip?	couldn't I be yipping? couldn't you be yipping? couldn't he be yipping? couldn't we be yipping? couldn't you be yipping? couldn't they be yipping?
Perfecto	Perfecto con V-ing
couldn't I have yipped? couldn't you have yipped? couldn't he have yipped? couldn't we have yipped? couldn't you have yipped? couldn't they have yipped?	couldn't I have been yipping? couldn't you have been yipping? couldn't he have been yipping? couldn't we have been yipping? couldn't you have been yipping? couldn't they have been yipping?