I felt flattered at being asked to give a lecture.

承蒙邀请来演讲，我深感荣幸。

He will give a lecture on Chapter 5.

第五章将由他主讲。

She is going to give a lecture on American verse.

她要做一个关于美国诗歌的讲座。

You'd never give a lecture about atoms to third-graders!

你就不会犯给三年级学生讲原子的错误了！

The professor will give a lecture of geographical features.

教授将要做关于地理特征的讲座。