How to say hi! what is the purpose of your visit in america, sir? in Japanese
1)
こんにちはこんにちは(konnichiha) (int) hello/good day。。(。) Japanese period "."アメリカアメリカ(amerika) (ateji) america/united states of americaにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.来たno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb目的目的(mokuteki) (n) purpose/goal/aim/objective/intentionはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibitionんですんです(ndesu) (exp) the expectation is that .../the reason is that .../the fact is that .../it is that ...かか(ka) (prt) indicates question/indicates choice, doubt, etc.。。(。) Japanese period "."
