This paper has discussed basic tunes of English sentences and has further analysed its relation with sentence types and meanings from the functional points of view.

本文从功能角度对英语语调使用问题进行了深入分析，指出其在句子内容与形式上的联系中所起的作用。

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This section covers the different types of error displays and their meanings.

本节讨论不同类型的错误显示及其意义。

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Indirect speech, the inconsistency between sentence meanings and utterance meanings, can be categorized into two typical types: metaphor and indirect speech act.

间接语言，即句子含义与话语含义的不一致，可分为隐喻和间接言语行为两种典型类型。

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