Your comments re gerunds are correct. You need to separate prepositional verbs from free verbs + infinitive. To a large extent, it is a matter of learning the prepositional verbs: look forward to be used to object to attend to drink to conform to You can try checking by putting them into the passive: most prepositional verbs should transform, while verb+infinitive will not: The committee objected to voting immediately.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.