Hi John,
Welcome on board. I'm a fully qualified
ESL teacher in Australia with many years experience. I've taught at secondary and tertiary levels, from beginners to advanced to teenagers, young adults, refugees, migrants and international students. Most of my students have been from Southeast Asia and lots from China, Hong Kong and mainland China.
You're right about not finding much material on teaching spoken English.
I don't know what age group your students are nor what level, beginner or what? This all makes a difference.
The good thing is you share the language and culture because both go hand in hand. If you teach spoken language you have teach culture. Let me explain. For instance, you could start with teaching greeting in American English and get your students to compare it with their native usage. Greeting in English is different to greeting in Mandarin or Cantonese for instance. Explore the different ways of greetings depending on whom you meet: a friend, acquaintance, relative, colleague or your boss. And where you meet: in the corridor, at school, in a cafe, on public transport, at someone's place, etc. Do you get the idea? Greeting requires simple grammar but has a complex cultural undertone, that's why spoken language is intertwined with culture. Discuss it in the students' native language but write the different English greetings on the board. Then get the students to role-play the various English greetings. I know role-play is not used in China but I had some colleagues from Australia who taught EFL in China and have used role-plays successfully. So you could give it a try.
eslandcateaching.wordpress.com
You could also check out the site below for more ideas.
Or let me know how you go and I can give you more ideas.
Good luck
Anne-Marie