关于“培训要认真聆听”的英文翻译，综合权威资料整理如下：
一、核心表达
listen carefully这是最直接的表达，强调专注地听。例如：
"Participants are encouraged to listen carefully to the expert's presentation."（参与者被鼓励专注听取专家的演讲） listen attentively侧重表现出高度的专注和兴趣。例如：
"The training session was very informative, and everyone listened attentively."（培训课程信息量很大，大家都专注聆听） listen earnestly强调发自内心的专注和尊重。例如：
"We must listen earnestly to the trainer's advice to maximize learning."（我们必须发自内心聆听培训师的建议以最大化学习效果）
二、完整句子示例
"During the training, it's crucial to listen carefully to the instructions and take notes."
"The new software tutorial required us to listen attentively to understand the nuances."
"As a professional, you should always listen earnestly to your colleagues' feedback."
三、补充说明
若需强调礼貌性，可用 listen respectfully （如宗教场景）或 listen attentively （如讲座场景）；
注意避免 listen to the teacher carefully 中的时态错误，应使用过去分词 listened （如：You must have listened carefully during the lecture）。
建议根据具体场景选择表达，例如课堂培训推荐使用 listen carefully ，而讲座或重要报告则更适合 listen attentively 。
