Intermediate Chinese - A Grammar and Workbook builds on Basic Chinese, with each bit of new grammar coming with new words. It allows a steep learning curve. This works for me, keeping me interested in both the new words and the new ways to use them. I'm very pleased with Basic and Intermediate Chinese and will probably get any more in the series once I'm nearing the end of this one. There are twenty-five chapters, each of which can be gone over in a couple of hours, including the teaching material and the following exercises. I'm very pleased with this book.
Really well thought out and clear. The explanations are clear and the exercises give real understanding. You need to read the elementary volume first, because this is quite advanced, and it helps to have a reasonable vocabulary in advance although the word list is commendably thorough.