I could fertilise you could fertilise he could fertilise we could fertilise you could fertilise they could fertilise
Forme en V-ing
I could be fertilising you could be fertilising he could be fertilising we could be fertilising you could be fertilising they could be fertilising
Perfect
I could have fertilised you could have fertilised he could have fertilised we could have fertilised you could have fertilised they could have fertilised
Perfect en V-ing
I could have been fertilising you could have been fertilising he could have been fertilising we could have been fertilising you could have been fertilising they could have been fertilising
Négation
Forme simple
I could not fertilise you could not fertilise he could not fertilise we could not fertilise you could not fertilise they could not fertilise
Forme en V-ing
I could not be fertilising you could not be fertilising he could not be fertilising we could not be fertilising you could not be fertilising they could not be fertilising
Perfect
I could not have fertilised you could not have fertilised he could not have fertilised we could not have fertilised you could not have fertilised they could not have fertilised
Perfect en V-ing
I could not have been fertilising you could not have been fertilising he could not have been fertilising we could not have been fertilising you could not have been fertilising they could not have been fertilising
Forme interrogative
Forme simple
could I fertilise? could you fertilise? could he fertilise? could we fertilise? could you fertilise? could they fertilise?
Forme en V-ing
could I be fertilising? could you be fertilising? could he be fertilising? could we be fertilising? could you be fertilising? could they be fertilising?
Perfect
could I have fertilised? could you have fertilised? could he have fertilised? could we have fertilised? could you have fertilised? could they have fertilised?
Perfect en V-ing
could I have been fertilising? could you have been fertilising? could he have been fertilising? could we have been fertilising? could you have been fertilising? could they have been fertilising?
Forme interro-négative
Forme simple
could I not fertilise? could you not fertilise? could he not fertilise? could we not fertilise? could you not fertilise? could they not fertilise?
Forme en V-ing
could I not be fertilising? could you not be fertilising? could he not be fertilising? could we not be fertilising? could you not be fertilising? could they not be fertilising?
Perfect
could I not have fertilised? could you not have fertilised? could he not have fertilised? could we not have fertilised? could you not have fertilised? could they not have fertilised?
Perfect en V-ing
could I not have been fertilising? could you not have been fertilising? could he not have been fertilising? could we not have been fertilising? could you not have been fertilising? could they not have been fertilising?