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Current change in the modal system of English

A case study of must, have to and have got to
  • Joanne Close and Bas Aarts
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English Historical Linguistics 2008
This chapter is in the book English Historical Linguistics 2008

Abstract

This paper takes the variation between must, have to and have got to as a window through which to view changes in the modal system in Present-Day British English (1960s–1990s). The results from this study show a dramatic decrease in frequency of the core modal must and a significant increase in frequency of the semi-modal have to in the Diachronic Corpus of Present-Day Spoken English (DCPSE). Changes in the modal system affect both epistemic and root uses of must, although have to is only an active rival to root must; epistemic instances of have to (and have got to) are rare in the corpus. We suggest that a tendency to avoid expressions of strong commitment is the cause of the decline in must. This is supported by similar falls in the frequency of should and ought found by Leech et al. (2009).

Abstract

This paper takes the variation between must, have to and have got to as a window through which to view changes in the modal system in Present-Day British English (1960s–1990s). The results from this study show a dramatic decrease in frequency of the core modal must and a significant increase in frequency of the semi-modal have to in the Diachronic Corpus of Present-Day Spoken English (DCPSE). Changes in the modal system affect both epistemic and root uses of must, although have to is only an active rival to root must; epistemic instances of have to (and have got to) are rare in the corpus. We suggest that a tendency to avoid expressions of strong commitment is the cause of the decline in must. This is supported by similar falls in the frequency of should and ought found by Leech et al. (2009).

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