should tread
Verbo irregolare: tread - trod- trod, trodden

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I'd tread
you'd tread
he'd tread
we'd tread
you'd tread
they'd tread 	I'd be treading
you'd be treading
he'd be treading
we'd be treading
you'd be treading
they'd be treading	I should've trod, trodden
you should've trod, trodden
he should've trod, trodden
we should've trod, trodden
you should've trod, trodden
they should've trod, trodden	I should've been treading
you should've been treading
he should've been treading
we should've been treading
you should've been treading
they should've been treading	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I shouldn't tread
you shouldn't tread
he shouldn't tread
we shouldn't tread
you shouldn't tread
they shouldn't tread 	I shouldn't be treading
you shouldn't be treading
he shouldn't be treading
we shouldn't be treading
you shouldn't be treading
they shouldn't be treading	I shouldn't have trod, trodden
you shouldn't have trod, trodden
he shouldn't have trod, trodden
we shouldn't have trod, trodden
you shouldn't have trod, trodden
they shouldn't have trod, trodden	I shouldn't have been treading
you shouldn't have been treading
he shouldn't have been treading
we shouldn't have been treading
you shouldn't have been treading
they shouldn't have been treading	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
should I tread?
should you tread?
should he tread?
should we tread?
should you tread?
should they tread? 	should I be treading?
should you be treading?
should he be treading?
should we be treading?
should you be treading?
should they be treading? 	should I have trod, trodden?
should you have trod, trodden?
should he have trod, trodden?
should we have trod, trodden?
should you have trod, trodden?
should they have trod, trodden? 	should I have been treading?
should you have been treading?
should he have been treading?
should we have been treading?
should you have been treading?
should they have been treading? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
shouldn't I tread?
shouldn't you tread?
shouldn't he tread?
shouldn't we tread?
shouldn't you tread?
shouldn't they tread? 	shouldn't I be treading?
shouldn't you be treading?
shouldn't he be treading?
shouldn't we be treading?
shouldn't you be treading?
shouldn't they be treading? 	shouldn't I have trod, trodden?
shouldn't you have trod, trodden?
shouldn't he have trod, trodden?
shouldn't we have trod, trodden?
shouldn't you have trod, trodden?
shouldn't they have trod, trodden? 	shouldn't I have been treading?
shouldn't you have been treading?
shouldn't he have been treading?
shouldn't we have been treading?
shouldn't you have been treading?
shouldn't they have been treading?