Conjugación del verbo inglés
COULD RUN

Verbo irregular: run - ran - run

Afirmación

Forma simple	Forma con V-ing
I could run you could run she could run we could run you could run they could run	I could be running you could be running she could be running we could be running you could be running they could be running
Perfecto	Perfecto con V-ing
I could have run you could have run she could have run we could have run you could have run they could have run	I could have been running you could have been running she could have been running we could have been running you could have been running they could have been running

Negación

Forma simple	Forma con V-ing
I couldn't run you couldn't run she couldn't run we couldn't run you couldn't run they couldn't run	I couldn't be running you couldn't be running she couldn't be running we couldn't be running you couldn't be running they couldn't be running
Perfecto	Perfecto con V-ing
I couldn't have run you couldn't have run she couldn't have run we couldn't have run you couldn't have run they couldn't have run	I couldn't have been running you couldn't have been running she couldn't have been running we couldn't have been running you couldn't have been running they couldn't have been running

Forma interrogativa

Forma simple	Forma con V-ing
could I run? could you run? could she run? could we run? could you run? could they run?	could I be running? could you be running? could she be running? could we be running? could you be running? could they be running?
Perfecto	Perfecto con V-ing
could I have run? could you have run? could she have run? could we have run? could you have run? could they have run?	could I have been running? could you have been running? could she have been running? could we have been running? could you have been running? could they have been running?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I run? couldn't you run? couldn't she run? couldn't we run? couldn't you run? couldn't they run?	couldn't I be running? couldn't you be running? couldn't she be running? couldn't we be running? couldn't you be running? couldn't they be running?
Perfecto	Perfecto con V-ing
couldn't I have run? couldn't you have run? couldn't she have run? couldn't we have run? couldn't you have run? couldn't they have run?	couldn't I have been running? couldn't you have been running? couldn't she have been running? couldn't we have been running? couldn't you have been running? couldn't they have been running?