The  book  chooses  grammar  points  related  to  the practical problems that occurred in learners’ study of Chinese. Precise explaining and abundant exercises are  highly  emphasized  with  the  methodical  and understandable  lectures.  The  book  emphasizes  the comparison and contrast of similar language points and that of the synonyms and antonyms, with plenty of unit exercises, comprehensive exercises and HSK grammar exercises, helping learners to better master gramma