modestly 谦虚的，适度的
elevate 提升
tone 语调，风格
well regarded 很受欢迎
capture 表达，捕获
While even the modestly educated sought an elevated tone when they put pen to paper before the 1960s, even the most well regarded writing since then has sought to capture spoken English on the page.
在20世纪六十年代之前，即使是受教育水平很一般的人，当他们提笔写字的时候，他们寻求一种高雅的语调，从那以后，即使是最受欢迎的作品，他们也书面用语口语化，
从句：when they put pen to paper（时间状语从句）
anknowledge 承认
non-standard 非标准的
expressive 富于表现力的
dialect 方言
convey 表达
As a linguist, he acknowledges that all varieties of human language, including non-standard ones like Black English, can be powerfully expressive—there exists no language or dialect in the world that cannot convey complex ideas.
作为一位语言学家，他承认，人类语言的各种变体，包括了像黑人这种非标准语言，都具有强大的表达力，在世界上不存在一种语言或方言，他不能够传地复杂的思想。
从句1： that all varieties of human language, including non-standard ones like Black English, can be powerfully expressive（宾语从句）
从句2：that cannot convey complex ideas（定语从句）
