I can achieve you can achieve she can achieve we can achieve you can achieve they can achieve
Forma con V-ing
I can be achieving you can be achieving she can be achieving we can be achieving you can be achieving they can be achieving
Perfecto
I can have achieved you can have achieved she can have achieved we can have achieved you can have achieved they can have achieved
Perfecto con V-ing
I can have been achieving you can have been achieving she can have been achieving we can have been achieving you can have been achieving they can have been achieving
Negación
Forma simple
I can't achieve you can't achieve she can't achieve we can't achieve you can't achieve they can't achieve
Forma con V-ing
I can't be achieving you can't be achieving she can't be achieving we can't be achieving you can't be achieving they can't be achieving
Perfecto
I can't have achieved you can't have achieved she can't have achieved we can't have achieved you can't have achieved they can't have achieved
Perfecto con V-ing
I can't have been achieving you can't have been achieving she can't have been achieving we can't have been achieving you can't have been achieving they can't have been achieving
Forma interrogativa
Forma simple
can I achieve? can you achieve? can she achieve? can we achieve? can you achieve? can they achieve?
Forma con V-ing
can I be achieving? can you be achieving? can she be achieving? can we be achieving? can you be achieving? can they be achieving?
Perfecto
can I have achieved? can you have achieved? can she have achieved? can we have achieved? can you have achieved? can they have achieved?
Perfecto con V-ing
can I have been achieving? can you have been achieving? can she have been achieving? can we have been achieving? can you have been achieving? can they have been achieving?
Forma interro-negativa
Forma simple
can't I achieve? can't you achieve? can't she achieve? can't we achieve? can't you achieve? can't they achieve?
Forma con V-ing
can't I be achieving? can't you be achieving? can't she be achieving? can't we be achieving? can't you be achieving? can't they be achieving?
Perfecto
can't I have achieved? can't you have achieved? can't she have achieved? can't we have achieved? can't you have achieved? can't they have achieved?
Perfecto con V-ing
can't I have been achieving? can't you have been achieving? can't she have been achieving? can't we have been achieving? can't you have been achieving? can't they have been achieving?