/ɑ:/

1.发音组合:a,ar,al,au

2.发音规则:舌尖离开下齿,口长大,舌身压低并后缩,双唇呈扁型,就像汉语中的“啊”

3.单词举例:

  ①a:father,fast,glass,class,last,

        after

  ②ar:farm,art,hard,party,park

4.句子举例:

  The park is far from the farm

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