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