must substitute
Regelmä&szlig;iges Verb: substitute - substituted- substituted

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must substitute
you must substitute
she must substitute
we must substitute
you must substitute
they must substitute 	I must be substituting
you must be substituting
she must be substituting
we must be substituting
you must be substituting
they must be substituting	I must have substituted
you must have substituted
she must have substituted
we must have substituted
you must have substituted
they must have substituted	I must have been substituting
you must have been substituting
she must have been substituting
we must have been substituting
you must have been substituting
they must have been substituting	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not substitute
you must not substitute
she must not substitute
we must not substitute
you must not substitute
they must not substitute 	I must not be substituting
you must not be substituting
she must not be substituting
we must not be substituting
you must not be substituting
they must not be substituting	I must not have substituted
you must not have substituted
she must not have substituted
we must not have substituted
you must not have substituted
they must not have substituted	I must not have been substituting
you must not have been substituting
she must not have been substituting
we must not have been substituting
you must not have been substituting
they must not have been substituting	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I substitute?
must you substitute?
must she substitute?
must we substitute?
must you substitute?
must they substitute? 	must I be substituting?
must you be substituting?
must she be substituting?
must we be substituting?
must you be substituting?
must they be substituting? 	must I have substituted?
must you have substituted?
must she have substituted?
must we have substituted?
must you have substituted?
must they have substituted? 	must I have been substituting?
must you have been substituting?
must she have been substituting?
must we have been substituting?
must you have been substituting?
must they have been substituting? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not substitute?
must you not substitute?
must she not substitute?
must we not substitute?
must you not substitute?
must they not substitute? 	must I not be substituting?
must you not be substituting?
must she not be substituting?
must we not be substituting?
must you not be substituting?
must they not be substituting? 	must I not have substituted?
must you not have substituted?
must she not have substituted?
must we not have substituted?
must you not have substituted?
must they not have substituted? 	must I not have been substituting?
must you not have been substituting?
must she not have been substituting?
must we not have been substituting?
must you not have been substituting?
must they not have been substituting?