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发音<br>嘴巴张开略圆,逐渐合拢<br>双唇逐渐收成圆形,舌后部抬起<br><br>单词<br>how now owl <br>flour hour sour<br>allow cow crowd<br>town flower tower<br>round shout sound<br>out outcome output <br>doubt found house <br>loud mount mountain <br>about account around <br>council count discount <br><br>句子<br>There is an owl.<br>I like sour cream.<br>The town is crowded.<br>We’ve found some flour<br>The flowers are in the house.<br><br>同音<br>[aʊ]<br>hour our<br>foul fowl<br>flower flour <br>bough bow <br>aloud allowed<br>council counsel<br><br>辨音<br>[aʊ] [əʊ]<br>now know<br>town tone<br>loud load<br>clown clone<br>drown drone<br>couch coach<br>noun known