Conjugación del verbo inglés
COULD SURF

Verbo regular: surf - surfed - surfed

Afirmación

Forma simple	Forma con V-ing
I could surf you could surf he could surf we could surf you could surf they could surf	I could be surfing you could be surfing he could be surfing we could be surfing you could be surfing they could be surfing
Perfecto	Perfecto con V-ing
I could have surfed you could have surfed he could have surfed we could have surfed you could have surfed they could have surfed	I could have been surfing you could have been surfing he could have been surfing we could have been surfing you could have been surfing they could have been surfing

Negación

Forma simple	Forma con V-ing
I couldn't surf you couldn't surf he couldn't surf we couldn't surf you couldn't surf they couldn't surf	I couldn't be surfing you couldn't be surfing he couldn't be surfing we couldn't be surfing you couldn't be surfing they couldn't be surfing
Perfecto	Perfecto con V-ing
I couldn't have surfed you couldn't have surfed he couldn't have surfed we couldn't have surfed you couldn't have surfed they couldn't have surfed	I couldn't have been surfing you couldn't have been surfing he couldn't have been surfing we couldn't have been surfing you couldn't have been surfing they couldn't have been surfing

Forma interrogativa

Forma simple	Forma con V-ing
could I surf? could you surf? could he surf? could we surf? could you surf? could they surf?	could I be surfing? could you be surfing? could he be surfing? could we be surfing? could you be surfing? could they be surfing?
Perfecto	Perfecto con V-ing
could I have surfed? could you have surfed? could he have surfed? could we have surfed? could you have surfed? could they have surfed?	could I have been surfing? could you have been surfing? could he have been surfing? could we have been surfing? could you have been surfing? could they have been surfing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I surf? couldn't you surf? couldn't he surf? couldn't we surf? couldn't you surf? couldn't they surf?	couldn't I be surfing? couldn't you be surfing? couldn't he be surfing? couldn't we be surfing? couldn't you be surfing? couldn't they be surfing?
Perfecto	Perfecto con V-ing
couldn't I have surfed? couldn't you have surfed? couldn't he have surfed? couldn't we have surfed? couldn't you have surfed? couldn't they have surfed?	couldn't I have been surfing? couldn't you have been surfing? couldn't he have been surfing? couldn't we have been surfing? couldn't you have been surfing? couldn't they have been surfing?