Bilingual speech takes research on code-mixing a step
further toward achieving a better understanding of the differences
in what in the past has been referred to simply as the mixing of
two languages in the sentence (or intrasentential code-switching).
In addition, Muysken presents the state of the discipline of language
contact in the year 2000 from the perspective of the grammar and
structure of language contact phenomena. He brings together and
analyzes an extensive set of language pairs from a wide variety of
communities and social contexts. Good familiarity with such varied
multilingual data provides the author with a strong base on which to
support his three-way classification (insertion,
alternation, and congruent lexicalization)
of code-mixing phenomena at the sentence level.