In the introduction to his target article Schlenker writes that „sign languages provide overt evidence on crucial aspects of the Logical Form of sentences that are only inferred indirectly in spoken language“ (p. 3) and furthermore that „sign languages are strictly more expressive than spoken languages because iconic phenomena can be found at their logical core“ (p.3). He further argues that one of the possible conclusions that can be drawn from these facts is that „spoken languages have comparable expressive mechanisms, but only when co-speech gestures are taken into account“ (p.3), as Goldin-Meadow & Brentari (2017) have recently claimed. In the following, I will elaborate on this possibility. Following Goldin-Meadow and Brentari (2017), I will show by reference to examples from the main text that a close comparison of sign language and spoken language under controlled conditions will not only tell us more about the semantics of gestures in spoken languages and semantics in general, but will also shed light on the notion of gesture within sign languages. In section 6.1 Schlenker revisits some of the discussed sign language phenomena and draws parallels to cases of spoken language that is enriched by co-speech gestures. I will follow this path and discuss more such examples and the consequences that arise from this method. In particular, I will compare Role Shift in sign language to viewpoint gestures in spoken language, discuss loci and locative shifts in comparison to pointing gestures in spoken language, and finally speculate about the role of gestures in general (in sign and spoken language) and the semantic contribution they can make (concerning the semantic dimension they target, i.e. whether they are at issue or not).

中文翻译：

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手语与语音加手势的比较

Schlenker在其目标文章的引言中写道：“手语为句子的逻辑形式的关键方面提供了明显的证据，这些句子只能通过口头语言间接推断出来”（第3页），此外，“手语严格地表现出比口语，因为可以在其逻辑核心找到标志性现象”（第3页）。他进一步指出，从这些事实中得出的一个可能的结论是，“口语具有可比的表达机制，但只有在考虑到同声手势时”（第3页），例如Goldin-Meadow和Brentari。 （2017）最近声称。在下文中，我将详细说明这种可能性。继Goldin-Meadow和Brentari（2017）之后，我将通过引用正文中的示例来表明，在受控条件下对手语和口语进行密切比较，不仅会告诉我们更多有关口语中手势的语义和总体语义的信息，而且还将使我们了解到手语中的手势概念。在第6.1节中，Schlenker回顾了一些讨论过的手语现象，并与同语音手势丰富的口语案例进行了比较。我将遵循这条路径，并讨论更多此类示例以及此方法带来的后果。特别是，我将比较手语中的角色转换和口语中的观点手势，并讨论与口语中的手势相比，轨迹和位置变化，