I could achieve you could achieve he could achieve we could achieve you could achieve they could achieve
Forme en V-ing
I could be achieving you could be achieving he could be achieving we could be achieving you could be achieving they could be achieving
Perfect
I could have achieved you could have achieved he could have achieved we could have achieved you could have achieved they could have achieved
Perfect en V-ing
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
Négation
Forme simple
I couldn't achieve you couldn't achieve he couldn't achieve we couldn't achieve you couldn't achieve they couldn't achieve
Forme en V-ing
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
Perfect
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
Perfect en V-ing
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
Forme interrogative
Forme simple
could I achieve? could you achieve? could he achieve? could we achieve? could you achieve? could they achieve?
Forme en V-ing
could I be achieving? could you be achieving? could he be achieving? could we be achieving? could you be achieving? could they be achieving?
Perfect
could I have achieved? could you have achieved? could he have achieved? could we have achieved? could you have achieved? could they have achieved?
Perfect en V-ing
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?
Forme interro-négative
Forme simple
couldn't I achieve? couldn't you achieve? couldn't he achieve? couldn't we achieve? couldn't you achieve? couldn't they achieve?
Forme en V-ing
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?
Perfect
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?
Perfect en V-ing
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?