形态学（又称“词汇形态学”或“词法”）是语言学的一个分支，研究词的内部结构，包括屈折变化和构词法两个部分。由于词具有语音特征、句法特征和语义特征，形态学处于音位学、句法学和语义学的结合部位，所以形态学是每个语言学家都要关注的一门学科。词的中心地位引发两个重要的问题：第一个总是涉及词的形式，即如何描述词素的变体，从而就会有多种研究模式；第二个问题涉及词的句法和记义功能，即词的句法和语义功能跟句法学和语义学的相互联系，从而就会同语言学的其它学科有交叉的领域。上述两个问题使形态学的独立地位经常受到挑战，并且使形态学研究具有多种模式。

In Child Language, Jean Stilwell Peccei outlines the major areas of inguistic analysis involved in the study of children's language and covers key areas such as : vocabulary development, word and sentence structures, conversational skills and pronunciation. Building on the established strengths of the first edition. Child Language has now been fully updated and expanded throughout.
The second edition of Child Language: contains an expanded corpus of child language data and twenty-four additional exercises provides detailed guidance for a range of simple research projects now contains unit summaries provides an updated and expanded further reading section.