1.元音：1) [I:] sea,he,see,piece,ceiling2) [I] sit,build,miss,myth 3) [e] bed,desk,head,4) [A] bad,land,bank,stamp 5) [B:] car,fast,class,plant,calm,aunt 6) [C] hot,want 7) [C:] door,more,sport,ball,w...