I may backdate you may backdate she may backdate we may backdate you may backdate they may backdate
Forme en V-ing
I may be backdating you may be backdating she may be backdating we may be backdating you may be backdating they may be backdating
Perfect
I may have backdated you may have backdated she may have backdated we may have backdated you may have backdated they may have backdated
Perfect en V-ing
I may have been backdating you may have been backdating she may have been backdating we may have been backdating you may have been backdating they may have been backdating
Négation
Forme simple
I mayn't backdate you mayn't backdate she mayn't backdate we mayn't backdate you mayn't backdate they mayn't backdate
Forme en V-ing
I mayn't be backdating you mayn't be backdating she mayn't be backdating we mayn't be backdating you mayn't be backdating they mayn't be backdating
Perfect
I mayn't have backdated you mayn't have backdated she mayn't have backdated we mayn't have backdated you mayn't have backdated they mayn't have backdated
Perfect en V-ing
I mayn't have been backdating you mayn't have been backdating she mayn't have been backdating we mayn't have been backdating you mayn't have been backdating they mayn't have been backdating
Forme interrogative
Forme simple
may I backdate? may you backdate? may she backdate? may we backdate? may you backdate? may they backdate?
Forme en V-ing
may I be backdating? may you be backdating? may she be backdating? may we be backdating? may you be backdating? may they be backdating?
Perfect
may I have backdated? may you have backdated? may she have backdated? may we have backdated? may you have backdated? may they have backdated?
Perfect en V-ing
may I have been backdating? may you have been backdating? may she have been backdating? may we have been backdating? may you have been backdating? may they have been backdating?
Forme interro-négative
Forme simple
mayn't I backdate? mayn't you backdate? mayn't she backdate? mayn't we backdate? mayn't you backdate? mayn't they backdate?
Forme en V-ing
mayn't I be backdating? mayn't you be backdating? mayn't she be backdating? mayn't we be backdating? mayn't you be backdating? mayn't they be backdating?
Perfect
mayn't I have backdated? mayn't you have backdated? mayn't she have backdated? mayn't we have backdated? mayn't you have backdated? mayn't they have backdated?
Perfect en V-ing
mayn't I have been backdating? mayn't you have been backdating? mayn't she have been backdating? mayn't we have been backdating? mayn't you have been backdating? mayn't they have been backdating?