cat和dog拼写有什么规律？

1加-s的:清辅音(s,"sh'',"ch''除外)后读[s],浊辅音(z,"u"s'ually'',"ge''除外)后读[z],在s,z,"s h'',"u"s'ually'',"ch'',,"ge''等辅音后读[iz]
2加-es的一般读[iz]
3以o结尾的,有的加s,有的加es,读[z]
4-ies结尾读[iz]
5以元音+y结尾,或以y结尾的专有名词,加-s,读[z]
6以-f或-fe结尾的:
加-s,读[s],如:roof,chhief,gulf,safe
改成-ves,读[vz],如:leaf,life,half,loaf
以上两钟形式均可的,如:handkerchief,scarf
7以-th结尾的,加-s:
长元音后,ths读["th''(浊)z]
短元音后,ths读["th''(清)s]
youths一词均可
8不规则变化及单复同形要特别记

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