推 mankiller:I'm indebted for your exhaustive responses. ^^" 03/23 23:11
※ 編輯: Lhanas 來自: 140.119.235.214 (03/24 16:20)
※ 引述《mankiller (English teacher is me)》之銘言：
: morphophonemic rules提到英文單字單複數的變化方式
: 有[-s],[-z],和[-iz] (第三個那個schwa打不出來...= =")
: 有兩條rules，R1>R2 之前老師有講過好幾次
: 但我有一點點忘記原因是為什麼...課本也有一點看不太懂...
: 而且要舉例子說明好像要舉結尾是sibilants的字，才有辦法prove R1<R2
: 有沒有哪位大大知道原因的嗎? 為何R1要先於R2?
R1: an epenthesis rule that inserts a schwa between sibilants
0 → schwa / C # __ C
[+strident] [+strident]
R2: a voice assimilation rule that makes the suffix agree in [voiced] with
the last segment of the preceding word
/-z/ → [αvoiced] / [αvoiced] # __
R1 must take the priority to apply, and thereby it can bleed the application
of R2, which would otherwise make the suffix devoiced and derive the unattested
allomorph *[-is], if the sibilant preceding it is also voiceless, as
illustrated below:
/baks-z/ /baks-z/
R1 baks-iz R2 baks-s
R2 -- R1 baks-is
output [baksiz] output *[baksis]
: 另外還有一個問題...是這個月初去考元智的語概問題，
: 題目大致上是這樣:
: Please explain why in English the indefinite article 'a' is
: used before words that begin a consonant sound,and why'an'is
: used before words which begin with a vowel sound.
: 感謝大家!! :)
Suppose the base form of the indefinite article is /an/, the choice of
allomorph falls out naturally as a result of the unmarkedness of CV syllable.
Specifically, the coda nasal of /an/ is dispreferable in terms of the notion
that CV syllable is the most unmarked syllable type. It follows that this
nasal coda should be truncated except when followed by words that begins with
a vowel sound, in which case it has been resyllabified as the onset of the
following syllable.
Note however that CVC syllable is in fact widespread in English, so an
alternative is to assume the indefinite article /an/ as a function word
may prefer to be monomoraic, namely, a light syllable. It is probably the
reason that the nasal coda, which is argued to contribute to syllable weight,
has to be deleted unless it is resyllabified as the onset of the following
syllable.
As for why to choose [an] rather than [a] as the base form, there are two
reasons:
1. Assuming [a] as the base requires an [n]-insertion rule when preceding words
that begins with a vowel sound. However, in so doing it is hard to explain
why the sound to be inserted is [n], not others.
2. Assuming [an] as the base requires an [n]-deletion rule when preceding words
that begins with a consonant sound. Such a rule seems to be natural relative
to the other way around as the arguements displayed above.
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