英语音标，清辅音和浊辅音的概念，为什么辅音要分清和浊？ 英语音标里清辅音和浊辅音有几个/分别是什么？
48\u4e2a\u82f1\u8bed\u97f3\u6807\u5143\u97f3\uff0c\u6e05\u8f85\u97f3\u548c\u6d4a\u8f85\u97f3\u6709\u54ea\u4e9b\u4e00\u3001\u5143\u97f3\u90e8\u5206\uff0820\u4e2a\uff09\uff1a
1\u3001\u5355\u5143\u97f3\uff1a[i:]\u3001[i]\u3001[ɔ:]\u3001[ɔ]\u3001[u:]\u3001[u]\u3001[ə:]\u3001[ə]\u3001[\u0251:]\u3001[ʌ]\u3001[e]\u3001[æ]
2\u3001\u53cc\u5143\u97f3\uff1a[ei]\u3001[ai]\u3001[ɔi]\u3001[ɛə]\u3001[uə]\u3001[iə]\u3001[au]\u3001[əu]
\u4e8c\u3001\u8f85\u97f3\u90e8\u5206\uff0828\u4e2a\uff09\uff1a
1\u3001\u6e05\u8f85\u97f3\uff1a[p]\u3001[t]\u3001[k]\u3001[f]\u3001[s]\u3001[\u03b8]\u3001[tr]\u3001[ts]\u3001[ʃ]\u3001[tʃ]\u3001[h]
2\u3001\u6d4a\u8f85\u97f3\uff1a[b]\u3001[d]\u3001[g]\u3001[v]\u3001[ð]\u3001[z]\u3001[ʒ]\u3001[r]\u3001[dʒ]\u3001[dz]\u3001[dr]\u3001[j]\u3001[w]\u3001[m]\u3001[n]\u3001[ŋ]\u3001[l]
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\u56fd\u9645\u97f3\u6807\uff08IPA\uff0cInternational Phonetic Alphabet\uff09\uff0c\u662f1888\u5e74\u56fd\u9645\u8bed\u97f3\u534f\u4f1a\uff08International Phonetic Association\uff09\u7684\u8bed\u8a00\u5b66\u5bb6\u5236\u5b9a\u51fa\u7684\u4e00\u5957\u53ef\u56fd\u9645\u901a\u7528\u7684\u8bed\u97f3\u7b26\u53f7\u53eb\u56fd\u9645\u97f3\u6807\u7b26\u53f7\uff08IPA\u2014International Phonetic Alphabet\uff09\uff0c\u5e0c\u671b\u4ee5\u4e00\u4e2a\u7b26\u53f7\u4ee3\u8868\u4e00\u97f3\uff0c\u907f\u514d\u5404\u4eba\u4f7f\u7528\u4e00\u5957\u81ea\u5df1\u7684\u7b26\u53f7\u6240\u4ea7\u751f\u7684\u4e0d\u4fbf\u3002
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1. Histories make men wise; poems witty; the mathematics subtle; natural philosophy deep; moral grave; logic and rhetoric able to contend. (Francis Bacon, British philosopher)
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2. If you don't learn to think when you are young, you may never learn. (Thomas Edison, American inventor )
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3. To sensible men, every day is a day of reckoning. ----J. W. Gardner
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4. Growth in wisdom may be exactly measured by decrease in bitterness. ----Nietzsch
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5. It is not enough to be industrious, so are the ants. What are you industrious about? ----Thoreau
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清辅音是不需要声带震动就能发出的音节：p,f,t,k,sh,h,ch,sth(ree)...
浊辅音是需要声带震动才能发出的音节：b,v,d,g,dg,z,th(ese)还就是sion中那个s所发出的音。
清与浊之间不是绝对的，当清辅音字母在S后面时，一般发浊辅音，如：stake, sky, sponsor, 读成 sdake, sgy
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