They have all been languages that were used by people in many different countries.请帮我分析一下该句的语法~
问题描述：
They have all been languages that were used by people in many different countries.
请帮我分析一下该句的语法~
答
They all have been languages that used by people in many different countries。
答
先调整下顺序：They all have been languages that were used by people in many different countries.that引导一个定语从句修饰前面主句的languages.后面 从句中 were used by 为被动语态 意为：被...使用；people...