Can I ask a question about midsemester?

关于期中考试我可以问个问题吗？

Teachers decided to skip this midsemester.

老师决定不举行期中考试。

All right, go ahead, how about starting with the period during midsemester?

好吧，那么就来吧，就来期中考试那段吧。

'in fact I wasn't surprised by his words because my son hadn't never been absorbed in his books this semester by the midsemester.

实际上儿子的话并没有让我惊奇，因为这学期直到期中考试结束，儿子就从来没有全神贯注于学习。