verbal principle

例句：

1. 1.The teacher asked the students to use their verbal skills in class.
   老师要求学生们在课堂上运用他们的口头技巧。
2. 2. The linguist studied the language of the native speakers.
   语言学家研究了当地居民的语言。
3. 3.The linguistics department at the university is responsible for teaching English as a second language.
   大学的语言学科负责教授英语作为第二语言的教学。