You can find people (not A people) ,it is a collective plural noun without singular . The correction of your text: "I am in Nanjing. I would like to find a foreigner ,who could teach me English or German in exchange of Chinese (or :and I would be teaching him Chinese in return). Search for teachers or language partners as Kegan suggested on: http://www.italki.com/partners/1-Chinese-English--200-0--0-1.htm (English natives learning Chinese) http://www.italki.com/teachers/1-1-English---0-999999-0-0-1.htm (Professional English teachers)

I can help. Also, you can find language partners and teachers on italki.

Email me at [email protected] If you want some conversational lessons!