Confused about "to describe" / "to describing"

Hi all,

Sentences:
s1 - After that he went on ____ Toni’s Party

Issues:
i1 - I am not sure at all about which one is the correct betwen “to describe” and “describing”. Please could you explain which one is correct and why (grammatically)

thanks !!

Hi Alumn@

The two versions of your sentence have different meanings:

After that he went on describing Toni’s party. = He continued with his description of the party.

After that he went on to describe Toni’s party. = He began and completed a description of the party.
.