Conjugación del verbo inglés
COULD ACHIEVE

Verbo regular: achieve - achieved - achieved

Afirmación

Forma simple	Forma con V-ing
I could achieve you could achieve he could achieve we could achieve you could achieve they could achieve	I could be achieving you could be achieving he could be achieving we could be achieving you could be achieving they could be achieving
Perfecto	Perfecto con V-ing
I could have achieved you could have achieved he could have achieved we could have achieved you could have achieved they could have achieved	I could have been achieving you could have been achieving he could have been achieving we could have been achieving you could have been achieving they could have been achieving

Negación

Forma simple	Forma con V-ing
I couldn't achieve you couldn't achieve he couldn't achieve we couldn't achieve you couldn't achieve they couldn't achieve	I couldn't be achieving you couldn't be achieving he couldn't be achieving we couldn't be achieving you couldn't be achieving they couldn't be achieving
Perfecto	Perfecto con V-ing
I couldn't have achieved you couldn't have achieved he couldn't have achieved we couldn't have achieved you couldn't have achieved they couldn't have achieved	I couldn't have been achieving you couldn't have been achieving he couldn't have been achieving we couldn't have been achieving you couldn't have been achieving they couldn't have been achieving

Forma interrogativa

Forma simple	Forma con V-ing
could I achieve? could you achieve? could he achieve? could we achieve? could you achieve? could they achieve?	could I be achieving? could you be achieving? could he be achieving? could we be achieving? could you be achieving? could they be achieving?
Perfecto	Perfecto con V-ing
could I have achieved? could you have achieved? could he have achieved? could we have achieved? could you have achieved? could they have achieved?	could I have been achieving? could you have been achieving? could he have been achieving? could we have been achieving? could you have been achieving? could they have been achieving?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I achieve? couldn't you achieve? couldn't he achieve? couldn't we achieve? couldn't you achieve? couldn't they achieve?	couldn't I be achieving? couldn't you be achieving? couldn't he be achieving? couldn't we be achieving? couldn't you be achieving? couldn't they be achieving?
Perfecto	Perfecto con V-ing
couldn't I have achieved? couldn't you have achieved? couldn't he have achieved? couldn't we have achieved? couldn't you have achieved? couldn't they have achieved?	couldn't I have been achieving? couldn't you have been achieving? couldn't he have been achieving? couldn't we have been achieving? couldn't you have been achieving? couldn't they have been achieving?