美国人是很幽默的由于各人的祖先、家庭和朋友都有各自不同的种族、肤色、宗教信仰和民族渊源,又由于人们对这种不同之处的敏感在近几年来已经达到空前微妙的地步,因此,讲带有民族、社会、宗教、性或种族类别的笑话就被认为是很不礼貌的事。尽管如此,能构成幽默的素材仍然不少,如职业,政治信仰或 Americans are very humorous because their ancestors, families, and friends all have different races, skin colors, religious beliefs, and national origins, and because people’s sensitivity to this difference has reached unprecedented subtleties in recent years. To the point, speaking a joke with ethnic, social, religious, sexual, or racial categories is considered impolite. In spite of this, there are still many materials that can constitute humor, such as occupational, political beliefs or