元音字母a e i/y o u元音字组ar er ir or ur are ere ire ore ure ai/ay air al au/aw ea ear ee eer ei/ey eu/ew ie oa oar/oor oi/oy oo ou/ow our ui 辅音字母b c d f g h j k l m n p q r s t v w- x y- z辅音字...