I may backdate you may backdate he may backdate we may backdate you may backdate they may backdate
Forma con V-ing
I may be backdating you may be backdating he may be backdating we may be backdating you may be backdating they may be backdating
Perfecto
I may have backdated you may have backdated he may have backdated we may have backdated you may have backdated they may have backdated
Perfecto con V-ing
I may have been backdating you may have been backdating he may have been backdating we may have been backdating you may have been backdating they may have been backdating
Negación
Forma simple
I mayn't backdate you mayn't backdate he mayn't backdate we mayn't backdate you mayn't backdate they mayn't backdate
Forma con V-ing
I mayn't be backdating you mayn't be backdating he mayn't be backdating we mayn't be backdating you mayn't be backdating they mayn't be backdating
Perfecto
I mayn't have backdated you mayn't have backdated he mayn't have backdated we mayn't have backdated you mayn't have backdated they mayn't have backdated
Perfecto con V-ing
I mayn't have been backdating you mayn't have been backdating he mayn't have been backdating we mayn't have been backdating you mayn't have been backdating they mayn't have been backdating
Forma interrogativa
Forma simple
may I backdate? may you backdate? may he backdate? may we backdate? may you backdate? may they backdate?
Forma con V-ing
may I be backdating? may you be backdating? may he be backdating? may we be backdating? may you be backdating? may they be backdating?
Perfecto
may I have backdated? may you have backdated? may he have backdated? may we have backdated? may you have backdated? may they have backdated?
Perfecto con V-ing
may I have been backdating? may you have been backdating? may he have been backdating? may we have been backdating? may you have been backdating? may they have been backdating?
Forma interro-negativa
Forma simple
mayn't I backdate? mayn't you backdate? mayn't he backdate? mayn't we backdate? mayn't you backdate? mayn't they backdate?
Forma con V-ing
mayn't I be backdating? mayn't you be backdating? mayn't he be backdating? mayn't we be backdating? mayn't you be backdating? mayn't they be backdating?
Perfecto
mayn't I have backdated? mayn't you have backdated? mayn't he have backdated? mayn't we have backdated? mayn't you have backdated? mayn't they have backdated?
Perfecto con V-ing
mayn't I have been backdating? mayn't you have been backdating? mayn't he have been backdating? mayn't we have been backdating? mayn't you have been backdating? mayn't they have been backdating?