must snow
Verbo regolare: snow - snowed- snowed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
-
-
it must snow
-
-
- 	-
-
it must be snowing
-
-
- 	-
-
it must have snowed
-
-
- 	-
-
it must have been snowing
-
-
- 	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
-
-
it must not snow
-
-
- 	-
-
it must not be snowing
-
-
- 	-
-
it must not have snowed
-
-
- 	-
-
it must not have been snowing
-
-
- 	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
-
-
must it snow?
-
-
- 	-
-
must it be snowing?
-
-
- 	-
-
must it have snowed?
-
-
- 	-
-
must it have been snowing?
-
-
- 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
-
-
must it not snow?
-
-
- 	-
-
must it not be snowing?
-
-
- 	-
-
must it not have snowed?
-
-
- 	-
-
must it not have been snowing?
-
-
-