lonely是形容词，孤独的，寂寞的。
lonely的副词是alone，意思为“独自地”
Lonely，英文单词，主要用作为形容词、名词，作形容词时意为“寂寞的；偏僻的”，作名词时意为“孤独者”。
例句
I could see she was lonely. 我能看出她很寂寞。
She lives alone and often feels lonely. 她孑然一身，常感到寂寞。
Sam was very lonely when he first moved to New York. 萨姆刚搬到纽约时非常寂寞。
