在系统功能语言学评价理论的介入系统中，让步是实现借言的语言手段之一，文献对让步连接词语篇功能的研究很多， 但对其人际功能的研究却相对缺乏。本文以评价理论的介入意义为依托，考察英语学术书评这种特定体裁和语境中评价部分让步介入资源的使用特点和对言语内容的介入意义。研究对语料中的让步语义资源进行了分类，同时认为在让步结构表达书评评价部分的五类内容中，介入所达到的效果侧重 点各有不同。本研究希望能对学术书评语篇的写作起到一定的启示作用。

In Systemic Functional Linguistics，the APPRAISAL theory regards concession as one of the engagement resources.Moving away from descriptions of concessive connectives solely in terms of textual relations this study describes their in terpersonal metafunction，especially their role as sourcing resources in English academic reviews based on the APPRAISAL theory．Linguistic resources of concession have been categorized and the findings show that concessive conjunctions and concessive conjuncts account for most of the concessives in the corpus，while the association of attitudinal disjuncts and concessive conjunctions or concessive conjuncts bears more interpersonal meanings． Concession is treated as a type of attribution which reflects interactions between participants and achieves dialogistic effects; at the same time，the study also proposes that concessives as engagement resources have different effects in different contents expressed by concessions． It is hoped that the present study will give some enlightenments to the writing of English academic reviews．