可数名词如果第一个音素是元音（注意不是元音字母）,它的单数形式是该单词前面加an.因为apple的第一个音素是元音[æ] ,所以它的单数前面加an.
the doctor advises me to eat (an)apple a day
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相关问题
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what does "an apple a day keeps the doctor away"me
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Mom makes me eat an apple a day
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It's said that eating an apple a day keeps doctors a_____.
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An apple a day keeps the doctor away.
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翻译 An apple a day keeps the doctor away.
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翻译：An apple a day keeps the doctors away.
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an apple a day (keeps/keep) the doctor away
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谚语提问请问是an apple a day keep the doctor away还是an apple a day k
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an apple a day really could keep the doctor awa
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An apple a day keeps the doctor away为什么doctor不加s