When the 'to' functions as a preposition rather than as part of the to- infinitive. The ing form functions as a noun. I look forward to seeing you.
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vandySometimes it's very confusing for me to distinguish between "to" as a preposition and "to" as an infinitive. Can you advise me on this?Not really. It's probably easier for learners simply to note that certain verb phrases such as look forward to, be used to, be accustomed to, etc, are followed by an -ing form
vandySometimes it's very confusing for me to distinguish between "to" as a preposition and "to" as an infinitive.When it is followed by a noun or a verb ending in ·ing, it’s a preposition.