I can preserve you can preserve he can preserve we can preserve you can preserve they can preserve
Forme en V-ing
I can be preserving you can be preserving he can be preserving we can be preserving you can be preserving they can be preserving
Perfect
I can have preserved you can have preserved he can have preserved we can have preserved you can have preserved they can have preserved
Perfect en V-ing
I can have been preserving you can have been preserving he can have been preserving we can have been preserving you can have been preserving they can have been preserving
Négation
Forme simple
I cannot preserve you cannot preserve he cannot preserve we cannot preserve you cannot preserve they cannot preserve
Forme en V-ing
I cannot be preserving you cannot be preserving he cannot be preserving we cannot be preserving you cannot be preserving they cannot be preserving
Perfect
I cannot have preserved you cannot have preserved he cannot have preserved we cannot have preserved you cannot have preserved they cannot have preserved
Perfect en V-ing
I cannot have been preserving you cannot have been preserving he cannot have been preserving we cannot have been preserving you cannot have been preserving they cannot have been preserving
Forme interrogative
Forme simple
can I preserve? can you preserve? can he preserve? can we preserve? can you preserve? can they preserve?
Forme en V-ing
can I be preserving? can you be preserving? can he be preserving? can we be preserving? can you be preserving? can they be preserving?
Perfect
can I have preserved? can you have preserved? can he have preserved? can we have preserved? can you have preserved? can they have preserved?
Perfect en V-ing
can I have been preserving? can you have been preserving? can he have been preserving? can we have been preserving? can you have been preserving? can they have been preserving?
Forme interro-négative
Forme simple
can I not preserve? can you not preserve? can he not preserve? can we not preserve? can you not preserve? can they not preserve?
Forme en V-ing
can I not be preserving? can you not be preserving? can he not be preserving? can we not be preserving? can you not be preserving? can they not be preserving?
Perfect
can I not have preserved? can you not have preserved? can he not have preserved? can we not have preserved? can you not have preserved? can they not have preserved?
Perfect en V-ing
can I not have been preserving? can you not have been preserving? can he not have been preserving? can we not have been preserving? can you not have been preserving? can they not have been preserving?