have a class：上课；学生上课；上一节课

例句：It is quite common that babies have a class every day.

现在宝宝每天上一堂课都很。

例句

1.The time that I write is small at this is all the hereafter of a month ed, and I am nowed to have a class.

当我写小在这个的时候都是一个月以后了，我现在上课了。

2.We have teaching seminars every Tuesday, a few pairs a week, about the Model class.

我们每周二都要教学研讨会，每周几人一组，讲示范课。

3.We were supposed to have a chemistry class , but Mr. Anderson was out of town for a meeting , so we had a history lesson instead .

我们本来要上化学课，不过安德森老师出城去开会，所以我们改上历史课。