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