A Comprehensive Grammar is a reference to Korean grammar, and presents a thorough overview of the language, concentrating on the real patterns of use in modern Korean. The book moves from the alphabet and pronunciation through morphology and word classes to a detailed analysis of sentence structures and semantic features such as aspect, tense, speech styles and negation. Updated and revised, this new edition includes lively descriptions of Korean grammar, taking into account the latest research in Korean linguistics. More lower-frequency grammar patterns have been added, and extra examples have been included throughout the text. The unrivalled depth and range of this updated edition of A Comprehensive Grammar makes it an essential reference source on the Korean language.
This is the first Korean grammar I read, so that I don't have anything to compare this with.
It's a good book. I cannot tell if it is missing anything, but the topics covered are well presented, with plenty of examples and a lot of emphasis on honorifics.
A couple of somehow negative notes: examples are, from the very beginning, complex. Which is good, because you are presented with real sentences. On the other hand, it can be hard for a beginner to isolate the important parts.
Second point is that maybe topics are covered too deeply. As a beginner, probably learning the polite (존댓말) and intimate (반말) forms of verbs is more than enough to start with. The quantity of information is, sometimes, overwhelming.