kkk kdk Sometimes “to” is considered a preposition that must be followed by a gerund, and sometimes “to” is considered part of the infinitive and must be followed by the verb. In order to recognize the difference it takes a lot of practice and a good dictionary. TO as preposition -A verb must be in the gerund form after a preposition. Examples; I am looking forward to meeting you….’’to” is a preposition. He dreams about winning the Lottery. Listen to the singing! I am used to seeing the sun every day….USED functions as adjective followed by preposition “to” TO as infinitive Verb + infinitive [to + verb] -When “to” is a part of the infinitive, it is no longer considered a preposition. Examples: I want “to buy” a new car….”to” is part of the infinitive. She told me” to go” away. He tried to answer the question. *I used “to see” the sun every day. …auxiliary verb USED TO *TO is part of the infinitive with auxiliary forms such as GOING TO, HAVE TO, USED TO, etc, Here is a good site for a detailed explanation. http://www.writing.utoronto.ca/advice/english-as-a-second-language/gerunds