英语中元音音素总共有20个,分别为：1) [i:] sea,he,see,piece,ceiling 2) [i]sit,build,miss,myth 3) [e] bed,desk,head,4) [ ae] bad,land,bank,stamp (a和e中间是连起来的) 5) [a:] car,fast,class,plant,calm,aun...