他们正在上一节课。
They are not having a lesson. They are cleaning the classroom.
他们不是在上课，而是在打扫教室。
But they are not having a lesson. They're studying by themselves.
他们不是在上课，而是在自学。
This time yesterday, we were having an English lesson. There was a slight earthquake.
昨天在这个时候，我们正在上英语课，这里发生了轻微地震。
This time yesterday, we were having an English lesson. There was a slight earthquake.
昨天这个时候，我们正上英语课，这时发生了轻微地震。 。
They are having a French lesson.
他们正在上法语课。
我有一节钢琴课。
I'm having a music lesson on Friday evening. I need to practice.
本周五晚上我有一节音乐课。我需要多练习。
They are having a Music lesson.
他们正在上一节音乐课。
I'm having a music lesson on Sunday morning.
周日早上我要上音乐课。
Look, the children are having a video lesson in the language lab.
看，孩子们在语音室上视听课。
They are having a PE lesson over there.
他们正在那边上体育课。
What are the children doing? They are having a gym lesson.
详情学生们在干啥？他们在上体育课。
What are the children doing? They are having a gym lesson.
详情学生们在干啥？他们在上体育课。
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