I could invest you could invest she could invest we could invest you could invest they could invest
Forme en V-ing
I could be investing you could be investing she could be investing we could be investing you could be investing they could be investing
Perfect
I could have invested you could have invested she could have invested we could have invested you could have invested they could have invested
Perfect en V-ing
I could have been investing you could have been investing she could have been investing we could have been investing you could have been investing they could have been investing
Négation
Forme simple
I couldn't invest you couldn't invest she couldn't invest we couldn't invest you couldn't invest they couldn't invest
Forme en V-ing
I couldn't be investing you couldn't be investing she couldn't be investing we couldn't be investing you couldn't be investing they couldn't be investing
Perfect
I couldn't have invested you couldn't have invested she couldn't have invested we couldn't have invested you couldn't have invested they couldn't have invested
Perfect en V-ing
I couldn't have been investing you couldn't have been investing she couldn't have been investing we couldn't have been investing you couldn't have been investing they couldn't have been investing
Forme interrogative
Forme simple
could I invest? could you invest? could she invest? could we invest? could you invest? could they invest?
Forme en V-ing
could I be investing? could you be investing? could she be investing? could we be investing? could you be investing? could they be investing?
Perfect
could I have invested? could you have invested? could she have invested? could we have invested? could you have invested? could they have invested?
Perfect en V-ing
could I have been investing? could you have been investing? could she have been investing? could we have been investing? could you have been investing? could they have been investing?
Forme interro-négative
Forme simple
couldn't I invest? couldn't you invest? couldn't she invest? couldn't we invest? couldn't you invest? couldn't they invest?
Forme en V-ing
couldn't I be investing? couldn't you be investing? couldn't she be investing? couldn't we be investing? couldn't you be investing? couldn't they be investing?
Perfect
couldn't I have invested? couldn't you have invested? couldn't she have invested? couldn't we have invested? couldn't you have invested? couldn't they have invested?
Perfect en V-ing
couldn't I have been investing? couldn't you have been investing? couldn't she have been investing? couldn't we have been investing? couldn't you have been investing? couldn't they have been investing?