Verbo regular: strengthen - strengthened - strengthened
Afirmación
Forma simple
I may strengthen you may strengthen he may strengthen we may strengthen you may strengthen they may strengthen
Forma con V-ing
I may be strengthening you may be strengthening he may be strengthening we may be strengthening you may be strengthening they may be strengthening
Perfecto
I may have strengthened you may have strengthened he may have strengthened we may have strengthened you may have strengthened they may have strengthened
Perfecto con V-ing
I may have been strengthening you may have been strengthening he may have been strengthening we may have been strengthening you may have been strengthening they may have been strengthening
Negación
Forma simple
I mayn't strengthen you mayn't strengthen he mayn't strengthen we mayn't strengthen you mayn't strengthen they mayn't strengthen
Forma con V-ing
I mayn't be strengthening you mayn't be strengthening he mayn't be strengthening we mayn't be strengthening you mayn't be strengthening they mayn't be strengthening
Perfecto
I mayn't have strengthened you mayn't have strengthened he mayn't have strengthened we mayn't have strengthened you mayn't have strengthened they mayn't have strengthened
Perfecto con V-ing
I mayn't have been strengthening you mayn't have been strengthening he mayn't have been strengthening we mayn't have been strengthening you mayn't have been strengthening they mayn't have been strengthening
Forma interrogativa
Forma simple
may I strengthen? may you strengthen? may he strengthen? may we strengthen? may you strengthen? may they strengthen?
Forma con V-ing
may I be strengthening? may you be strengthening? may he be strengthening? may we be strengthening? may you be strengthening? may they be strengthening?
Perfecto
may I have strengthened? may you have strengthened? may he have strengthened? may we have strengthened? may you have strengthened? may they have strengthened?
Perfecto con V-ing
may I have been strengthening? may you have been strengthening? may he have been strengthening? may we have been strengthening? may you have been strengthening? may they have been strengthening?
Forma interro-negativa
Forma simple
mayn't I strengthen? mayn't you strengthen? mayn't he strengthen? mayn't we strengthen? mayn't you strengthen? mayn't they strengthen?
Forma con V-ing
mayn't I be strengthening? mayn't you be strengthening? mayn't he be strengthening? mayn't we be strengthening? mayn't you be strengthening? mayn't they be strengthening?
Perfecto
mayn't I have strengthened? mayn't you have strengthened? mayn't he have strengthened? mayn't we have strengthened? mayn't you have strengthened? mayn't they have strengthened?
Perfecto con V-ing
mayn't I have been strengthening? mayn't you have been strengthening? mayn't he have been strengthening? mayn't we have been strengthening? mayn't you have been strengthening? mayn't they have been strengthening?