"Pay attention in class" 是 "仔细听课" 的英文表达。
来源：
这句话是由两个单词组合而成的，"pay attention" 意为 "注意"，"in class" 意为 "在课堂上"。
例句:
Please pay attention in class, so you can learn effectively.
请在课堂上仔细听讲，这样你才能有效地学习。
If you want to do well on the test, you need to pay attention in class.
如果你想考试取得好成绩，你需要在课堂上仔细听讲。
You will miss important information if you don't pay attention in class.
如果你不在课堂上仔细听讲，你会错过重要的信息。