English verb conjugation COULD SNOW
Regular verb: snow - snowed - snowed
Affirmation
Simple form
--
it could snow
-
-
-
V-ing form
--
it could be snowing
-
-
-
Perfect
--
it could have snowed
-
-
-
V-ing perfect
--
it could have been snowing
-
-
-
Negation
Simple form
--
it couldn't snow
-
-
-
V-ing form
--
it couldn't be snowing
-
-
-
Perfect
--
it couldn't have snowed
-
-
-
V-ing perfect
--
it couldn't have been snowing
-
-
-
Interrogative form
Simple form
--
could it snow?
-
-
-
V-ing form
--
could it be snowing?
-
-
-
Perfect
--
could it have snowed?
-
-
-
V-ing perfect
--
could it have been snowing?
-
-
-
Interro-negative form
Simple form
--
couldn't it snow?
-
-
-
V-ing form
--
couldn't it be snowing?
-
-
-
Perfect
--
couldn't it have snowed?
-
-
-
V-ing perfect
--
couldn't it have been snowing?
-
-
-