say good-bye
常用告别用语。
He said good-bye and left.
他说了声再见就离开了。
再见；告别
告别语；再见
告别语；再见
a farewell remark
She waved a tearful good-bye as the train pulled away.
火车开走时，她含泪挥手告别。
用法提示：名词，表示告别行为
Their final good-bye at the airport was filled with promises to write.
他们在机场的最后告别充满了写信的承诺。
用法提示：名词，指告别的时刻或行为
After many prolonged good-byes, the guests finally left the party.
经过多次漫长的告别，客人们终于离开了派对。
用法提示：名词复数形式，指多次告别
常用告别用语。
He said good-bye and left.
他说了声再见就离开了。
表示向某人或某物告别。
She said good-bye to her friends at the airport.
她在机场向朋友们道别。
They waved good-bye as the train departed.
火车离开时他们挥手告别。
grammar · medium
易错句子I good-bye my teacher before leaving.
正确表达I said good-bye to my teacher before leaving.
在英语中，“good-bye”是名词，不能用作动词。要表达“告别某人”，应使用动词短语“say good-bye to someone”。
grammar · medium
易错句子He gave me warm good-bye.
正确表达He gave me a warm good-bye.
“good-bye”作为可数名词，在表示“一次告别”时，前面需要加不定冠词“a”或定冠词“the”。
good-bye 是非正式告别，farewell 较正式
good-bye 常用，bye 更随意简短
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