uncle前面用a还是an

uncle前面用an；因为uncle的首字母音标是元音，用不定冠词an。uncle的意思是叔叔、舅父、姨父、伯伯等，例如“an uncle comes to my home”的意思是家里来了一位叔叔。可数名词前加不定冠词a还是an取决于首字母的音标，例如university虽然首字母是元音，但音标是辅音，所以只能用a university。

相关例句：

1、He was an orphan and lived with his uncle.

他是个孤儿，和他叔叔一起生活。

2、Uncle Harry is terminally ill with cancer.

哈里叔叔癌症已到了晚期。

3、I don't have much contact with my uncle.

我和叔父甚少联系。

4、My uncle's branch of the family emigrated to Canada.

我们家族中我叔父的这一支移居到了加拿大。