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