拉斯维加斯是美国内华达州的最大城市，以赌博业为中心的庞大的旅游、购物、度假产业而著名，世界上十家最大的度假旅馆就有九家是在这里，是世界知名的度假圣地之一，拥有“世界娱乐之都”和“结婚之都”的美称。下面，我们走进下面这组英语口语对话，了解一下拉斯维加斯吧。
karen： i'm not comfortable about this， sandy.
i don't understand most of these games.
sandy： that's okay. i can explain a little.
karen： i don't want to lose all my money.
sandy： don't worry. you can't lose all your money.
because you won't gamble all your money.
karen： i guess you're right.
sandy： of course i'm right. i already told you the rule for las vegas. remember?
karen： yes， i remember.
you must decide how much money you will gamble before you start to play.
sandy： that's right. that's the best way to have control over yourself.
you say to yourself. “tonight i will gamble fifty dollars. only fifty dollars. no more.”
if you follow the rule， you can't lose more than fifty dollars.
karen： i know it's true， sandy. but still some people lose control.
they start to gamble， and they can't stop.
sandy： but i won't let you do that. i will watch you.
karen： okay.
sandy： so how much do you want to gamble?
karen： maybe 500 dollars.
sandy： 500 dollars! that's too much!
you just said you are afraid to lose your money.
if you're afraid， why do you want to gamble 500 dollars?
karen： i don't want people to think i'm stingy.
sandy： that is a bad attitude to have， karen!
if you think that way， las vegas will be really dangerous for you.
karen： so how much should i gamble?
sandy： why not fifty or one-hundred dollars?
karen： okay. one-hundred then. do you think i will lose it?
sandy： i don't know. you have to be smart， but you have to be lucky too.
some games are all luck. with some， you need to be smart.
karen： i want games that are all luck.
sandy： i knew you would say that! then you should play the slot machines.
karen： slot machines? no， i don't want that! that's too boring.
i want a game with cards or dice.
sandy： so what do you want to play then?
karen： blackjack.
we can play blackjack. and i will gamble one-hundred， or maybe two-hundred dollars.
sandy： huh? you are breaking our rule already! and we didn't even start to play yet!
karen： oh， don't be so strict! we are in las vegas.
sandy： yes， and if i stay with you， we will have to walk back home to new york.
because we will lose all our money and our plane tickets too!
