Regular verb: behave - behaved - behaved
Simple form | V-ing form |
I must behave you must behave she must behave we must behave you must behave they must behave | I must be behaving you must be behaving she 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 she 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 she 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 must not behave you must not behave she must not behave we must not behave you must not behave they must not behave | I must not be behaving you must not be behaving she must not be behaving we must not be behaving you must not be behaving they must not be behaving |
Perfect | V-ing perfect |
I must not have behaved you must not have behaved she must not have behaved we must not have behaved you must not have behaved they must not have behaved | I must not have been behaving you must not have been behaving she must not have been behaving we must not have been behaving you must not have been behaving they must not have been behaving |
Simple form | V-ing form |
must I behave? must you behave? must she behave? must we behave? must you behave? must they behave? | must I be behaving? must you be behaving? must she 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 she 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 she have been behaving? must we have been behaving? must you have been behaving? must they have been behaving? |
Simple form | V-ing form |
must I not behave? must you not behave? must she not behave? must we not behave? must you not behave? must they not behave? | must I not be behaving? must you not be behaving? must she not be behaving? must we not be behaving? must you not be behaving? must they not be behaving? |
Perfect | V-ing perfect |
must I not have behaved? must you not have behaved? must she not have behaved? must we not have behaved? must you not have behaved? must they not have behaved? | must I not have been behaving? must you not have been behaving? must she not have been behaving? must we not have been behaving? must you not have been behaving? must they not have been behaving? |