"say good-bye" 是英语中常用的告别表达，由动词 "say"（说）和名词 "good-bye"（再见）构成，意为“道别、说再见”。其音标为：英 /seɪ ˌɡʊdˈbaɪ/，美 /seɪ ˌɡʊdˈbaɪ/ 。作为日常交流中的基础短语，它可用于正式或非正式场合，既可以是短暂分离时的礼貌用语，也可用于长期告别的场景。

用法说明

基本结构
通常作为独立短语使用，也可后接介词 "to" 引出告别的对象，构成 "say good-bye to sb./sth." 结构，表示“向某人/某物道别”。例如："I came to say good-bye to you."（我是来向你道别的）。

语境差异

日常场景：用于临时离开或结束对话，语气轻松。如打电话时结束通话："There's someone on the other line. I must say good-bye now."（有人在另一条线等着，我得挂了）。

正式场合：在较为庄重的告别中使用，如离职、远行等。例如："As I placed the letter on the desk, I called my staff in to say good-bye."（我把信放在桌上，叫来所有职员一一道别）。

情感色彩：可表达不舍、遗憾等情绪。如："I was silenced without so much as an opportunity to say good-bye."（我甚至没机会说再见就被噤声了）。

10句实用例句

With that I say good-bye and good luck.（我就此道别，并祝你好运）

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）

Father, I came to say good-bye.（父亲，我是来道别的）

She didn't even say good-bye to her mother when she went to study in the United States.（她去美国留学时，甚至没向母亲道别）

We stayed for a nursing home in the afternoon, and the old man say good-bye.（我们在养老院待了一下午，和老人道别）

I just wanted to say good-bye.（我只是想道个别）

They visited and stayed until 7 pm, and they said their good-byes.（他们拜访到晚上7点，然后道别离开）

At the end of the meeting, they said good-bye and exchanged hugs.（会议结束时，他们互相拥抱道别）

He threw him away. I never got to say good-bye.（他把它扔了，我都没来得及说再见）

If I could stop the moon ever rising... We will never say good-bye.（如果我能阻止月亮升起……我们就永远不用道别）

常见短语搭配

say good-bye to someone
向某人道别。例如："They hurried into the city to say good-bye to us."（他们赶进城来和我们告别）。

**say good-bye to so