Clive : I mean the preposition "with" -> pronoun/noun (a boy) --> participle/relative pronoun. And also others preposition like, of, from, for,after and all this kind of preposition to introduce a subordinate clause . I was wondering whether a bare infinitive could be used after the pronoun/noun (a boy), (which i thought to be unlikely, since bare infinitive can't modify pronoun)
Avangi: Hey, i know that "a boy" shouldn't use "do" but in this context "a boy" is not a subject and shouldn't use does, however if does is used in the context (context I'm talking about) " I team up with a boy does 5 subjects" it doesn't make sense at all, unless "who" is included before "does", which I already thought to be true (relative pronoun/clause) and so does the "participle phrase" (doing), which i already know that it's widely used.