"Pay attention to" 可以用 "focus on" 或 "be attentive to" 来表达。
其来源是由于 "pay attention" 在口语中常被用作注意的意思，而 "focus" 和 "be attentive" 则是两个更正式的说法。
例句：
Please pay attention to the instructions before starting the task. (请注意指示在开始任务前)
Focus on what the speaker is saying. (关注演讲者说什么)
Be attentive to the details in the report. (注意报告中的细节)