Polly Lingual
To Be (Negation)
开始上课
刽子手
词汇
Vocabulary
isn't
短语
Phrases
He's not fine.
Related Lessons
讲语言
Talking About Languages
星期几
Days of the Week
Food
~es Verbs
~ies Verbs
课程
Courses
初级
Beginner
语法
Grammar
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