And he asked me to give a lesson to the class.

于是他让我给全班上一堂课。

New century requires the teacher not only to be able to give a lesson, but also do scientific research.

新世纪要求教师不仅能上课，而且能科研。

Therefore, we must get the several officals in the presence of all , it can give a lesson and warning to other officals to avoid and decrease the phenomenon occurs.

因此，我们必须当众把赶下来，这样能给其他官员一个警惕和教训，来减少和避免这种现象再发生。