I teach in Beijing ,the capital of China.逗号后面的句子做什么成分啊?

I teach in Beijing ,the capital of China.逗号后面的句子做什么成分啊? I want to find someone who can teach my english,at the same time I can teach you Chinese.ONCE A WEEK,SUNDAY,IN BEIJING I(w ) in beijing I was in Beijing( ) She taught in Beijing last year.对in Beijing 为什么题目是taught teach I live in Beijing in Beijing 是地点状语吗 I lived in beijing.分析句子结构(in beijing)是什么 who want to learn chinese.language exchange in beijing .english and chinese.hello.i am a chinese girl ,now i am college student in beijing .i want to improve my english ,so i want to find a english speaker to be partner as the same time i will teach I live in beijing.对划线部分提问 beijing画线 I live in Beijing.改为一般疑问句 I used to__(live)in Beijing. I was born in a city( )Beijing I used to live in Beijing I live in Beijing,____ now. I have arrived in Beijing.一般疑问句 I live in Beijing 问句加意思 I live in Beijing.的上一个问句 I like the ____（teach）in red because she ____(teach) us English well.