Vocabulary: Tones 
jiěshì 
jiēxiàlái 
liǎojiě 
bāngzhù 
duì 
yǒuyòngde 
chángyòngde 
jiéshù
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CT_124: Self Introduction

Level 3 (lessons 121 to 180) of our progressive Mandarin course. Get all 7 levels (420 lessons), flashcards, exercises and additional resources at www.chinesetrack.com