【词汇大师】变！变！变！(1/2)
生活在不断的变化，人也是一样。声音也不例外，今天词汇大师学习英语的音变。
TIPS
本篇听写只听写嘉宾的话，主持人的话不需要听写。听仔细些。
主持人的话①RS: William Labov and other researchers have been tracking sound changes for a big project, the Atlas of North American English, to be published in a few months.
HINTS
theaht
feahct
http://t1.g.hjfile.cn/listen/201307/201307021018076599462.mp3What happens here is the short-a becomes ai in every single word, so that people have, say, theaht and feahct. In the meantime, the short words spelled with short-o like socks or block or cot move into the position that was formerly occupied by ah. So the man's name Jahn that's a man's name, Jahn. And the girl's name becomes Jain. So this is like a game of musical chairs. We call it chain shifting, in which five or six vowels all change places.
Well, American dialects have been studied for a hundred years or so. But unlike European countries, America has never finished a map of the United States, only the eastern United States is covered and a few spots here and there. So we included both Canada and the United States in a study we started in 1992. And in about six years we covered the entire continent using a telephone survey of all the urbanized areas, the big cities. So it covers about two-thirds of the population of North America, and it represents them with about 800 speakers.现在这里发生的事情是短期的变得爱在每一个字，这样的人，说，theaht和feahct。在此期间，短的话拼写短o类似袜子或块或婴儿床迁入的立场是，以前被占用的啊。因此该名男子的名字是一个人的名字，雅恩雅恩。女孩的名字成为耆那教。因此，这是像音乐椅游戏。我们叫它链转移，在五或六个元音变化的地方。
那么，美国方言已经研究一百年左右。但与欧洲国家不同，美国永远不会结束美国的地图，只有美国东部的覆盖，并在这里和那里的几个景点。因此，我们在研究中，我们在1992年开始包括加拿大和美国。约六十年，我们采用电话调查的所有城市化地区，大城市覆盖了整个大陆。因此，它涵盖了北美人口的大约三分之二，它代表约800扬声器。
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