Question

>>To research a topic<<, I use the reference section.
infinitive phrase
prepositional phrase

Answer 1

Second one I think

Answer 2

so its the prepositional phrase :)?

Answer 3

I think so by logic. Honestly I'm not good at English thingies.

Answer 4

well can you like explain why you think its a prepositional phrase

Answer 5

@petiteme

Answer 6

I think its infinitive phrase

Answer 7

lol can you tell me why?

Answer 8

Infinitive maybe.

http://grammar.about.com/od/pq/g/prephraseterm.htm
http://grammar.about.com/od/il/g/Infinitive-Phrase.htm

Answer 9

ya i guess ill go with infinitive what do you think?

Answer 10

@Zale101