回复：回复：真难挑呀!

来源: lilac09 于 2009-10-02 20:12:33 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (998 bytes)
本帖于 2009-10-06 05:55:50 时间, 由版主 林贝卡 编辑
回答: 真难挑呀! 由 lilac09 于 2009-10-02 17:44:40

有啥可惭愧的，俺的问题更多。I am just revenging here :)

Let me summarize what I have learnt here plus a little that I have discovered myself about /s/. /z/ problems.
BTW, you always give me good advice, appreciate it.

1. Final voiced consonant (b, d, g, l, m, n, ng, r, v, voiced th) + s ---> /z/
2. Final voiceless consonant (f, k, p, t, voiceless th) + s ---> /s/
3. Final vowel + s ---> no rules, except when any of the following rules apply
4. Some words that can be used both as verb and noun/adjective ---> verb: /z/, noun or adjective: /s/
5. Words ending in -as, -is, -os, -us:
when the s is part of the word in its basic form (not plural or third party singular verb) ---> /s/
when the s is added to make it a plural or third party singluar verb ---> /z/
6. Words ending in -ces, -des, -oes, -shes, -ses, -zes ---> /z/
7. Words ending in -sis, -nce, -nse, -ss (including -less, ness), -sce ---> /s/
8. /z/ is more common than /s/ overall

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