alone作形容词意思是单独的、独自一人、孤单的。alone作副词意思是独自地、仅仅。alone比较级：aloneer，alone最高级：aloneest。alone的短句搭配：be alone是孤独的；feel alone感到孤独；leave alone听其自然；let alone更不用说；look alone显得孤独；seem alone似乎是孤独的。

Alone的例句：I like being alone in the house.我喜欢独自一人待在家里。I’m going to London by myself next week.我准备下星期一个人去伦敦。I want to finish this on my own.我想独自完成这项工作。

Sam was very lonely when he first moved to New York.萨姆刚搬到纽约时非常寂寞。He was sitting alone at a table in a wine bar,smoking a big cigar.他独自一人坐在酒吧的一张桌旁，抽着一支大雪茄。

I quite understand that you need some time alone.我很理解你需要独自静一会。Would you mind leaving us alone for a few minutes?你不介意让我们单独待一会吧？