I must donate you must donate she must donate we must donate you must donate they must donate
V-ing form
I must be donating you must be donating she must be donating we must be donating you must be donating they must be donating
Perfect
I must have donated you must have donated she must have donated we must have donated you must have donated they must have donated
V-ing perfect
I must have been donating you must have been donating she must have been donating we must have been donating you must have been donating they must have been donating
Negation
Simple form
I mustn't donate you mustn't donate she mustn't donate we mustn't donate you mustn't donate they mustn't donate
V-ing form
I mustn't be donating you mustn't be donating she mustn't be donating we mustn't be donating you mustn't be donating they mustn't be donating
Perfect
I mustn't have donated you mustn't have donated she mustn't have donated we mustn't have donated you mustn't have donated they mustn't have donated
V-ing perfect
I mustn't have been donating you mustn't have been donating she mustn't have been donating we mustn't have been donating you mustn't have been donating they mustn't have been donating
Interrogative form
Simple form
must I donate? must you donate? must she donate? must we donate? must you donate? must they donate?
V-ing form
must I be donating? must you be donating? must she be donating? must we be donating? must you be donating? must they be donating?
Perfect
must I have donated? must you have donated? must she have donated? must we have donated? must you have donated? must they have donated?
V-ing perfect
must I have been donating? must you have been donating? must she have been donating? must we have been donating? must you have been donating? must they have been donating?
Interro-negative form
Simple form
mustn't I donate? mustn't you donate? mustn't she donate? mustn't we donate? mustn't you donate? mustn't they donate?
V-ing form
mustn't I be donating? mustn't you be donating? mustn't she be donating? mustn't we be donating? mustn't you be donating? mustn't they be donating?
Perfect
mustn't I have donated? mustn't you have donated? mustn't she have donated? mustn't we have donated? mustn't you have donated? mustn't they have donated?
V-ing perfect
mustn't I have been donating? mustn't you have been donating? mustn't she have been donating? mustn't we have been donating? mustn't you have been donating? mustn't they have been donating?