这个人在讲课英语

讲课：lectureteachgive a lesson [lecture]祝你学习进步，更上一层楼！请记得采纳，谢谢！(*^__^*)

The teacher is teaching a class in xxxx with English.a class in xxxx 一堂 xxxx 课， 如历史，地理，数学，……等等。

他们在上课。意思是他们正在上课，所以说这是一个现在进行时。用英语说就是They are having classes.因为不是一个人，所以说可能是上的科目也不同，所以用复数形式。

The teacher was giving a lecture==================================================================你好！很高兴为您解答，祝你学习进步，身体健康，家庭和谐！有不明白的可以追问！如果有其他问题请另发或点击向我求助，答题不易，请谅解.如果您认可我的回答，请点击下面的【采纳为满意回答】或者点评价给好评，谢谢！你的好评是我前进的动力。

TeachingGiving a lessonEducation请采纳吧

1 she is lecturing students 2 being ill， she didn't come to school3students are listening to her talk4She has to study in the United States for three years, haven't came back5 She went to study in the United States how many years? Whether to come back China?6 She didn't come off, today have something, etc. She has come to say again.

She is giving a lecture to students.Due to being sick, she didn't gave a class to students today.Students are listening to her in class.She has studied in the US. for three years, never come back.How long has she been America for study? Did she ever came home?She asked for leave today, keep the questions till she comes back.