英语学习乐园：课程

Can you explain the difference between the two phraces?

My favorite subject is history.

Proffesor Zhang's lecture¹ is too difficult,I could hardly  keep up with it.

We have 8 courses this semester,including the ——.

required course必修课

elective选修课

subject科目

course课程

extracurricular课外的

keep up with跟上

1 lecture   

n.讲座，讲课；演讲

参考例句：

• I take it as a pleasure to attend your lecture.我很愿意听你讲课。
• The professor began his lecture by telling a joke.教授在讲课前先讲一个笑话。