Student or Learner
Which one is correct?
They're close to sign another deal with a high-profile actor.
They're close to signing another deal with a high-profile actor.
Would you please exlain when we can add an ''ing'' form of verbs after ''to''?
The "to" in this is a prepostion relating to their (figurative) spatial relationship, and not part of a verb, and the -ing form is being used like a noun. You could understand it better as:
They're close to (the) signing (of) another deal with a high-profile actor.
We would be unlikely to say it that way in real life as it's very "wordy" but it might help you understand how the grammar works.