S的发音规则
一、大部分可数名词的复数及动词第三人称单数的一般现在式;是以-es结尾的;如：
moths;glasses；digs;teaches等..其读法是：
1．在清辅音后读/s/..
例：months/mnIs/;cakes/keiks/;stops/st&ps/;laughs/la%:::fs/
2．在浊辅音及元音后读/z/..
例：girls/g+：lz/;pictures/'piktM+z/;potatoes/p+'teit+z/;reads/ri：dz/;digs/digz/;cries/kraiz/
3．在/s/、/z/、/M/、/tM/、/d{/等音后-es发/iz/..
例：glasses/'gla：siz/;bridges/'brid{iz/;noses/'n+uziz/;teaches/'ti：tMiz/;wash-es/'w&Miz/
请注意下面这些词单复数的发音变化：
house/haus/→houses/'hauziz/;mouth/mauI/→mouths/mauJz/
字母s的读音有/s/、/z/、/M/、/{/这几种;下面主要讲讲发/s/音的几条规则..
一、s在词首时;除了sugar;sure以及sh组合发/M/以外;其余一般发/s/..
例：surface/'s+：fis/;serve/s+：v/;seven/sevn/;six/siks/;some/sm/;sign/sain/
比较：design/di'zain/
一般前缀;合成词不影响其读音..s仍读成/s/..
例：unsafe/n'seif/;unsatisfactory/n$+tis'f$k+t+t+ri/;roadside/'r+udsaid/;teaspoon/'ti：spu：n/;snowstorm/'sn+ust&：m/
二、两个s在词尾时读作/s/..
例：grass;glass;address;press;success;pass;miss;stress;across;swiss;puss;progress;process;kiss
三、词尾s在u后读作/s/..
例：bus/bs/;us/s/;minus/'main+s/;abacus/'$bks/;plus/pls/;status/'steit+s/;virus/'vai+r+s/
四、在sis组合的弱读中;两个s都读作/s/..
例：emphasis/'emf+sis/;analysis+='nlsis/;thesis/'I：sis/;crisis/'kraisis/
五、s在字母c前常读作/s/..stops是什么音
例：muscle/'msl/;discipline/'disiplin/;science/'sai+ns/
六、s在某些前后缀中读作/s/..
1．在前缀mis-;dis-中;s读作/s/..
例：mismanage/ mis'm$niDN/;misjudge/ mis'DNDN/;misbelieve/ misbi'l：v/;disorder/di's&：d+/;disobey/dis+'dei/
2．在后缀－sive;sity;－self;-some;-sy中;s读作/s/..
例：expensive/ik'spensiv/;intensive/in'tensiv/;decisive/di'saisiv/
yourself/j&：'self/;handsome/'h$ns+m/;troublesome/'trblsm/;tiresome/tai+s+m/;quarrelsome/'kw&r+ls+m/
七、s在清辅音前后常读作/s/..
1．s在清辅音前常读作/s/..
例：honest/'&：nist/;newspaper/'nj： speip/;task/t%：sk/;satisfy/'s$tisfai/;grasp/gr%：sp/
2．s在清辅音后常读作/s/..
例：sportsman/'sp&：tsmn/;works/w+：ks/;stops/st&ps/;roofs/r：fs/．
八、词尾se在字母r;l;n后读作/s/..
例：horse/h&：s/;nurse/n+：s/;worse/w+：s/;course/k&：s/;universe/'j：nivs/;pulse/pls/;else/els/;tense/tens/;sense/sens/
1如果名词词尾的发音是一个清辅音/s/;/∫/;/t∫/除外;-s发/s/的音;如:
books/buks/
suits/su:ts/
2如果名词词尾的发音是一个浊辅音/z/;/з/;/dз/除外或元音;-s发/z/的音;如:
ties/taiz/
dogs/dogz/
3如果名词词尾的发音是/s/;/∫/;/t∫/;/z/;/з/;/dз/;-s发/iz/的音;如:
dresses/'dresiz/

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