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A floating tone is a morpheme〔Clark, Mary M. 1993. "Representation of downstep in Dschang Bamileke". The PhOilOlogy of Tone: The Representation of Tonal Register, ed. by Harry van der Hulst and Keith Snider. Berlin/New York: Mouton de Gruyter. Pp. 29-73〕 or element of a morpheme that contains no consonants, no vowels, but only tone. It cannot be pronounced by itself, but affects the tones of neighboring morphemes.〔Mary Paster, UC Berkeley, "FLOATING TONES IN GÃ *" http://elanguage.net/journals/index.php/sal/article/view/1366/925〕〔Wentum, Comfort. 1997. A Lexical Tonology of Ga. Legon: University of Ghana, M. Phil thesis.〕 An example occurs in Bambara. Bambara has two phonemic tones,〔Clements, G. N. and Kevin C. Ford. 1979. "Kikuyu tone shift and its synchronic consequences." Linguistic Inquiry 10: 179-210.〕 ''high'' and ''low.'' In this language, the definite article is a floating low tone. With a noun in isolation, it is associated with the preceding vowel, turning a high tone into a falling tone: () ''river;'' () ''the river''. When it occurs between two high tones, it downsteps the following tone: * ''it's not a river'' * (or ) ''it's not the river'' Also common are floating tones associated with a segmental morpheme such as an affix.〔Kropp-Dakubu, Mary E. 1986. "Downglide, floating tones and non-WH questions in Ga and Dangme." The Phonological Representation ofSuprasegmentais, ed. by Koen Bogers, Harry van der Hulst, and Maarten Mous. Dordrecht: Foris Publications. Pp. 153-173.〕 For example, in Okphela, an Edoid language of Nigeria,〔Zimmerman, 1. 1858. A grammatical sketch and vocabulary of the Akra- or Galanguage with an appendix on the Adanme dialect. Stuttgart, 2 vols. Republished with an Introduction by 1. Berry, Gregg International, 1972.〕 the main negative morpheme is distinguished from the present tense morpheme by tone; the present tense morpheme (á-) carries high tone, whereas the negative past morpheme (´a-) imposes a high tone on the syllable which precedes it: *oh á-nga ''he is climbing'' *óh a-nga ''he didn't climb'' Floating tones derive historically from morphemes which assimilate〔Goldsmith, John. 1976. Autosegmental Phonology. Cambridge: MIT, PhD. dissertation. Distributed by IULe.〕 or lenite〔Okunor, Vincent. 1969. Tone in the Ga verb. Legon: Institute of African Studies. Paster, Mary. 2000. "Issues in the tonology of Ga." Columbus: Ohio State University, Undergraduate thesis.〕 to the point where only their tone remains.〔Trutenau, H.M.J. 1972. "A sketch of tone rules required for a generative transformational grammar of Ga (a terraced level tone language)." Linguistics 79: 83-96.〕 == References == 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「floating tone」の詳細全文を読む スポンサード リンク
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