Regular verb: unscrew - unscrewed - unscrewed
Simple form | V-ing form |
I must unscrew you must unscrew he must unscrew we must unscrew you must unscrew they must unscrew | I must be unscrewing you must be unscrewing he must be unscrewing we must be unscrewing you must be unscrewing they must be unscrewing |
Perfect | V-ing perfect |
I must have unscrewed you must have unscrewed he must have unscrewed we must have unscrewed you must have unscrewed they must have unscrewed | I must have been unscrewing you must have been unscrewing he must have been unscrewing we must have been unscrewing you must have been unscrewing they must have been unscrewing |
Simple form | V-ing form |
I mustn't unscrew you mustn't unscrew he mustn't unscrew we mustn't unscrew you mustn't unscrew they mustn't unscrew | I mustn't be unscrewing you mustn't be unscrewing he mustn't be unscrewing we mustn't be unscrewing you mustn't be unscrewing they mustn't be unscrewing |
Perfect | V-ing perfect |
I mustn't have unscrewed you mustn't have unscrewed he mustn't have unscrewed we mustn't have unscrewed you mustn't have unscrewed they mustn't have unscrewed | I mustn't have been unscrewing you mustn't have been unscrewing he mustn't have been unscrewing we mustn't have been unscrewing you mustn't have been unscrewing they mustn't have been unscrewing |
Simple form | V-ing form |
must I unscrew? must you unscrew? must he unscrew? must we unscrew? must you unscrew? must they unscrew? | must I be unscrewing? must you be unscrewing? must he be unscrewing? must we be unscrewing? must you be unscrewing? must they be unscrewing? |
Perfect | V-ing perfect |
must I have unscrewed? must you have unscrewed? must he have unscrewed? must we have unscrewed? must you have unscrewed? must they have unscrewed? | must I have been unscrewing? must you have been unscrewing? must he have been unscrewing? must we have been unscrewing? must you have been unscrewing? must they have been unscrewing? |
Simple form | V-ing form |
mustn't I unscrew? mustn't you unscrew? mustn't he unscrew? mustn't we unscrew? mustn't you unscrew? mustn't they unscrew? | mustn't I be unscrewing? mustn't you be unscrewing? mustn't he be unscrewing? mustn't we be unscrewing? mustn't you be unscrewing? mustn't they be unscrewing? |
Perfect | V-ing perfect |
mustn't I have unscrewed? mustn't you have unscrewed? mustn't he have unscrewed? mustn't we have unscrewed? mustn't you have unscrewed? mustn't they have unscrewed? | mustn't I have been unscrewing? mustn't you have been unscrewing? mustn't he have been unscrewing? mustn't we have been unscrewing? mustn't you have been unscrewing? mustn't they have been unscrewing? |