What does your English teacher speak ---Chinese and English .是填language还是languages ,为什么?

应是language
提问者事先不知道你的英语老师会多少语言,所以应用单数
language是不可数名词,languages是可数名词,表示多少种类的语言
language
KK:[]
DJ:[]
n.
1.语言;语言文字[U]
Language is an instrument for communication.
语言是交际的工具.
2.(国家、民族等的)语言文字[C]
He can speak several languages.
他会讲好几种语言.
3.(使用文字以外的)表达方式;(动物的)表意方式[C][U]
The deaf and mute communicate by sign language.
聋哑人用手势交际.
4.语言风格[U]
His prose is written in elegant language.
他的散文写得十分优雅.
5.强烈的言词,骂人的话[U]
You shouldn't use such strong language.
你不应该使用这样强硬的措词