There are many ways in which you could greet a guest. You could always greet a guest with a simple hello.
Hola
how do ausralias greet people on chirstmas
You greet them by saying (As-saalaam Alaikum) meaning Peace Be With You!
Hey, What your name? How are you doing? My name is.... There are a lot of ways or thing to say it doesn't take much.
There are some websites that may be helpful. Try http://www.ehow.com/info_8429758_different-kinds-ways-greet-people.html or http://www.englishtown.com/community/channels/article.aspx?articleName=greetingsomeone . These websites should have some helpful ideas on how to greet people in different ways.
People greet each other to show respect. just say that someone is coming into your home, you greet them. this shows them that they are welcome to come into your home.
However you usually "greet" people you meet.
How do swedes greet each other.
With both the hands jointed, they greet other
They don't just greet the person they are talking to, they also greet, or ask how their whole line of family is.
icecream