lf it is hot, snow (melts).
lf it is hot, snow (will melt);
If you (heat) water, it (boils).
If you (heat) water, it (will boil).
If you (heated) the water, it (would boil).
If you (had heated) the water, it (would have boiled).
lf it is hot, snow (melts).
lf it is hot, snow (will melt);
If you (heat) water, it (boils).
If you (heat) water, it (will boil).
If you (heated) the water, it (would boil).
If you (had heated) the water, it (would have boiled).