◊ Early on originated in British English. Some American writers have objected to it, but it is now very common in the U.S. Note that unlike early, early on can appear at the beginning of a sentence.*early on起源于英国英语，一些美国作家反对使用这一短语，不过现在该短语在美国也很常用。注意，与early不同的是，early on可以用在句首。