I enjoyed reading these books very much.

我很喜欢读这些书。

I'm afraid you're right.

恐怕你对了。

He was our go-between.

他是我们的媒人。

How many courses are you taking this semester?

这学期你选了多少课？

Do I have to get it done by noon?

我必须在中午以前做完吗？

After studying an hour, I finally got the hang of the lesson.

我学习了一个小时，终于理解了这一课的要点。