Verbo regular: back - backed - backed
Forma simple | Forma com V-ing |
I must back you must back he must back we must back you must back they must back | I must be backing you must be backing he must be backing we must be backing you must be backing they must be backing |
Perfeito | Perfeito com V-ing |
I must have backed you must have backed he must have backed we must have backed you must have backed they must have backed | I must have been backing you must have been backing he must have been backing we must have been backing you must have been backing they must have been backing |
Forma simple | Forma com V-ing |
I mustn't back you mustn't back he mustn't back we mustn't back you mustn't back they mustn't back | I mustn't be backing you mustn't be backing he mustn't be backing we mustn't be backing you mustn't be backing they mustn't be backing |
Perfeito | Perfeito com V-ing |
I mustn't have backed you mustn't have backed he mustn't have backed we mustn't have backed you mustn't have backed they mustn't have backed | I mustn't have been backing you mustn't have been backing he mustn't have been backing we mustn't have been backing you mustn't have been backing they mustn't have been backing |
Forma simple | Forma com V-ing |
must I back? must you back? must he back? must we back? must you back? must they back? | must I be backing? must you be backing? must he be backing? must we be backing? must you be backing? must they be backing? |
Perfeito | Perfeito com V-ing |
must I have backed? must you have backed? must he have backed? must we have backed? must you have backed? must they have backed? | must I have been backing? must you have been backing? must he have been backing? must we have been backing? must you have been backing? must they have been backing? |
Forma simple | Forma com V-ing |
mustn't I back? mustn't you back? mustn't he back? mustn't we back? mustn't you back? mustn't they back? | mustn't I be backing? mustn't you be backing? mustn't he be backing? mustn't we be backing? mustn't you be backing? mustn't they be backing? |
Perfeito | Perfeito com V-ing |
mustn't I have backed? mustn't you have backed? mustn't he have backed? mustn't we have backed? mustn't you have backed? mustn't they have backed? | mustn't I have been backing? mustn't you have been backing? mustn't he have been backing? mustn't we have been backing? mustn't you have been backing? mustn't they have been backing? |