| 520 | ## | $aThis is Book 2B of the third edition, including a total of 13 lessons. It follows Book 2A and comes to the stage of grammar and sentence patterns. Each lesson basically consists of five sections: text, new words, notes, phonetics/grammar, and exercises. The texts are mostly practical conversations; they are where grammar and vocabulary are used. The new words are all common words. The exercises come in diverse types, including comprehension, imitation, communication, etc. |