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