I could only take intro courses because there were no intermediate level courses available for those particular topics.
我只能选入门课程，因为这些特定主题没有中级课程可选。
2
The listening journal you assigned us to keep for the Intro to World Music class, I am not sure I understand what to do.
您在《世界音乐入门》课上让我们写一篇音乐报告，我并不确定自己该写些什么。
3
But in our intro class, you are reviewing the basics, like plots, setting and character and getting your first real exposure to different literary styles.