good bye相当于词组，goodbye是单词,它可以是名词,也可以是感叹词。goodbye可以单独使用，表示“再见”的意思。goodbye可以表达“再见”的意思。
good bye和goodbye的区别1、good bye相当于词组，而good-bye是名词，也是感叹词;goodbye与good-bye都可以单独使用，表示“再见”的意思。goodbye与good-bye都是正确的表达，可以表达“再见”的意思。
2、关于“good bye”例句：
Goodbye! It was great to meet you. 再见!认识你很高兴。
She didn't even say goodbye to her mother . 她甚至没有向母亲道个别。
We waved them goodbye . 我们向他们挥手告别。
We've already said our goodbyes. 我们已经道别了。
3、“good-bye”例句：
They hurried into the city to say good-bye to us. 他们赶进城来和我们告别。
She left without so much as saying “ good-bye ”. 她甚至连“再见”都没说就走了。
We said good-bye to each other at the station. 我们是在车站分手的。
I left in such a hurry that I didn't have time to say good-bye to you. 临行匆忙，未能向你告别。
good bye相似短语good byen.再见
say good bye to对某人说再见,告别…
kiss good bye吻别, 放弃,失去
say good bye to sb向(某人)告别
by the bye顺便说到, 顺便提起 附带地
bye bye拜拜，再见
bye channel溢水道
leg byen. 〈板球〉击中得分
bye for now再见
bye lawphr. 地方规则
