The linguists, w ho study linguistics, say Am erican English has a lot in common w ith British English. That is, the form er is similar to the latter. But in fact they differ in m any w ays. First, they have differences in vocabulary. For exam ple, people get around in London by underground, w hile in New York by subway. Besides, the sam e w ord has a slightly different m eaning, w hich can be confusing. Second, the differences betw een them exist in gram m ar and prepositions. Am ericans use in the team , w hile the British use on the team . Third, there are also differences betw een the tw o varieties in spelling and pronunciation. Compared with British English’ s spelling, Am erican English’ s spelling seem s simpler. The w ork of Noah made a difference, leading to this variation. Noah simplified som e w ords’ spelling and m ade them have a distinctive Am erican look. He w rote a dictionary, introducing lots of new Am erican w ords, pronunciation, use and new spelling. Although British criticised it and w eren’ t in favour of these changes, it rapidly becam e popular am ong Am ericans thanks to Noah’ s attempt. The dictionary becam e a standard reference book in the USA. 语言学家，即研究语言学的人说美式英语和英式英语有很多共同特点。也就是说，前者与后者很相似。但事实上他们在许多方面不同。首先，两者在词汇方面不同。比如，人们乘地铁 (underground) 在伦敦 四处走动 ，而在纽 约人们乘 地铁(subway)走动。而且，同一个单词在意思上也有稍微不同，这可能令人感到困惑。第二，两者之间的不同还存在于语法和介词中。美国人用 in the team，而英国人用 on the team。第三，这两个不同种类在拼写和读音上也有所不同。与英式英语拼写相比，美式英语的拼写似乎更简单。诺亚的工作产生 了很大影响，导致了这种变化。诺亚简化了一些单词的拼写，使它们有明显的美国面貌。他写了一本字典，引进了很多新的美国单词、读音、用法以及新的拼写。尽管英国人批评这本字典，不支持这些变化，但多亏了诺亚的努力，它很快在美国人中流行起来。这本字典已成了美国的一本标准的参考书。
