This study investigates the introductory it pattern (as in it is important that the technique looks effective) in six varied registers in the British National Corpus (BNC), exploring how it is used to construct evaluation and social interaction in different contexts of situation. Register-specific features were identified in terms of the evaluative semantics of this pattern, the associated clauses and the agents of evaluated clauses. Drawing on the affect, judgement and appreciation dimensions within Martin and White’s Appraisal Framework, this study has unpacked the complexity of evaluative meaning conveyed in this pattern, observing the highest proportion of judgement in academic registers but affect in newspaper. The results show that this structure is most heavily used in academic discourse and that though to-infinitive is the most frequent, a that-clause appears more frequently in academic discourse. Register variation is also found regarding the agents of evaluated clauses, in which academic texts and newspapers most often comment on inanimate entities but fiction and magazines prefer to conceal the agents of what they are evaluating. Thus, the introductory it pattern is a salient evaluation device widely employed in the six registers, seeing varying extents to which its rhetorical use indexes different value systems and discursive norms of registers.

中文翻译：

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通过模式构建评估：介绍性 it 模式的特定于寄存器的变化

本研究调查了英国国家语料库 (BNC) 中六个不同语域中的介绍性 it 模式（因为该技术看起来有效很重要），探索如何在不同情况下使用它来构建评估和社交互动。根据该模式的评估语义、相关子句和评估子句的代理，确定了特定于寄存器的特征。本研究利用马丁和怀特评价框架中的情感、判断和欣赏维度，解开了这种模​​式所传达的评价意义的复杂性，观察到学术记录中的判断比例最高，而报纸中的情感比例最高。结果表明，这种结构在学术话语中使用最多，虽然 to-infinitive 是最常见的，that-c​​lause 更频繁地出现在学术话语中。在评估条款的代理方面也发现了注册变化，其中学术文本和报纸最常评论无生命的实体，但小说和杂志更喜欢隐藏他们正在评估的代理。因此，介绍性 it 模式是在六个语域中广泛使用的显着评估工具，可以看到其修辞使用在不同程度上反映了不同的价值体系和语域的话语规范。