她以前是个传统的中国女孩，可出国一年以后，也已经变成了一个地道的美国人。

[误] She was a traditional Chinese girl before, but after one year abroad, she has become a real American.

[正] She was a traditional Chinese girl before, but after one year abroad, she has become as American asapple pie.

注：“苹果馅饼”是典型的美国食品，用它来表达“地道的美国式”是再合适不过了。需要提醒大家注意的是，这里的 apple pie 虽用单数，但前面却不加冠词，又如：It\'s as easy as pie(这太容易了)。另外，这里不能用 a real American，因为她毕竟不是美国人。但可以将 real 换成 typical。