must tread
Verbe irrégulier : tread - trod- trod, trodden
Traduction française : fouler aux pieds 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must tread
you must tread
she must tread
we must tread
you must tread
they must tread 	I must be treading
you must be treading
she must be treading
we must be treading
you must be treading
they must be treading	I must have trod, trodden
you must have trod, trodden
she must have trod, trodden
we must have trod, trodden
you must have trod, trodden
they must have trod, trodden	I must have been treading
you must have been treading
she must have been treading
we must have been treading
you must have been treading
they must have been treading	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not tread
you must not tread
she must not tread
we must not tread
you must not tread
they must not tread 	I must not be treading
you must not be treading
she must not be treading
we must not be treading
you must not be treading
they must not be treading	I must not have trod, trodden
you must not have trod, trodden
she must not have trod, trodden
we must not have trod, trodden
you must not have trod, trodden
they must not have trod, trodden	I must not have been treading
you must not have been treading
she must not have been treading
we must not have been treading
you must not have been treading
they must not have been treading	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I tread?
must you tread?
must she tread?
must we tread?
must you tread?
must they tread? 	must I be treading?
must you be treading?
must she be treading?
must we be treading?
must you be treading?
must they be treading? 	must I have trod, trodden?
must you have trod, trodden?
must she have trod, trodden?
must we have trod, trodden?
must you have trod, trodden?
must they have trod, trodden? 	must I have been treading?
must you have been treading?
must she have been treading?
must we have been treading?
must you have been treading?
must they have been treading? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not tread?
must you not tread?
must she not tread?
must we not tread?
must you not tread?
must they not tread? 	must I not be treading?
must you not be treading?
must she not be treading?
must we not be treading?
must you not be treading?
must they not be treading? 	must I not have trod, trodden?
must you not have trod, trodden?
must she not have trod, trodden?
must we not have trod, trodden?
must you not have trod, trodden?
must they not have trod, trodden? 	must I not have been treading?
must you not have been treading?
must she not have been treading?
must we not have been treading?
must you not have been treading?
must they not have been treading?