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