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