大多数美国人喜欢被人看作一个有着独特个性和特点的人。因此，千万不要说，“因为你来自美国，所以我想和你交朋友。”而且，也不要暗示你之所以接近他们是因为你想跟人练习英语。那会使人厌烦。
Most Americans like to be recognized as individuals as someone special with unique characteristics and personalities. Therefore, never say, “You’re from America so I want to be your friend.” Also don’t imply that the reason why you approached them is because you wanted someone to practice your English with. That turns people off.
(Source: wwenglish.com)