In my opiniton, you should ask them to list at least five topics they would like to talk about. Then plan a lesson considering students�interest.

 

Hello!

When we were in the university speaking about the marriage was the most interesting topic. Why people marry!!!

Also why they study...and one of the reasons was to have a better chance in marriage...

i think different people have different interests .you didn �t mention your English level...your age and many other things that will affect your interests.

Also speaking about the teachers and their way of teaching and their behaviors would be interesting.

I �m a little confused about "congress." In English, the word means to join, or a group, such as the US Congress. I �m not sure if you mean teach a lesson to give a speech or address.

 

Assuming that you are giving a speech, you might consider what you yourself are interested in. It �s easier to speak convincingly about something you care about. Pick a fairly narrow topic, but not so specialized that most people couldn �t understand what you mean. For example, "music" is much too broad. "Technical aspects of playing Mozart �s Piano Concerto 23 in A Major on a synthesizer" will go right over the heads of the non-music majors. "Mozart �s influence on modern pop music" would probably be fine if you can actually find supporting documents. This, of course, is merely an example. Look to your own interests and areas of expertise.

 

If you have to teach a sample lesson, then think about what would be most useful for the students. For college students, that might be names of different university departments in English. Many will be similar to German, but some might be very different. Names of buildings would also be very useful, as would medical terms.

 

But remember, we can only provide ideas. You �re going to have to do the work yourself. Good luck!