Our company’s performance this year has been slightly disappointing.

句子中的 this year 不是时间状语，而是修饰名词performance 的后置定语，句意：我们公司今年的业绩有点令人失望。

又如下面句子中的时间短语也是后置定语（不是时间状语）：

The rain this month was below average. 这个月的降雨量低于平均标准。

The profit this year was £1 million. 今年的利润为一百万英镑。

The weather this winter is worse than it was last year. 今年冬天的天气比去年冬天的差。

The storm last night blew down the tree. 昨晚的暴风雨把树刮倒了。

The weather last summer was awful. 刚过去的夏季天气真糟糕。

The announcement last week came as a shock to all of us. 上星期的通知使我们大家都吃了一惊。

The meeting next month will discuss international trade. 下月的会议将讨论国际贸易问题。