我们来看看《中国日报》中的一段话：

Only 20 percent of employees expect their year-end bonus will be more generous than last year’s, while the inflation mounted to 4.4 percent, according to a survey by Chinese-language newspaper National Business Daiily.

从上句话中我们可以看到，“年终奖”的英语就是“year-end bonus”，“bonus”指的就是“额外津贴，奖金”的意思。除了这个常用意思，它还可以指“anything pleasant in addition to what is expected”，比如说：

The warm weather in winter has been a real bonus.(冬天有这样暖和的天气真是喜出望外。)