a在单词中一般有五个音最为常见：1、在开音节中发[ei]音 name plane cake2、在闭音节中重读时发[?]音 bag dad hat3、在闭音节中非重读时发[?]音 away asleep sofa4、后面是ss,sk,sp,st,f 时发[a:]音 ask grasp class5、在 w 或 wh 后面时发[?]或[?:] want water watch提示：排除掉一些特例,基本都符合

开音节：day way pay say age baby cake take table same plane paper place plate face gate name grade wake make able tape tate radio cage change save space race potato safe skate snake

闭音节:and apple at back bag am black can carry catch dad family factory bad map man that sad lab pan sand lap match shall than has thank hat stand fathand as black carrotcandle happy