关于“goodbye”的英文短句，以下是综合整理后的分类示例：

一、日常告别场景

1. 直接表达

I'm afraid I must say goodbye. [正式场合]

I really going to miss you. [情感表达]

I'd like to say goodbye to you. [礼貌用语]

2. 情绪渲染

A leaden weight lay on her heart as she waved him goodbye. [沉重心情]

With tears in her eyes, she said her goodbyes. [含泪告别]

二、场景化表达

1. 公共交通

They yelled their goodbyes when the bus left. [汽车离开时]

The train was late, so we said goodbye reluctantly. [火车晚点]

2. 特殊情境

Goodbye, my dear! I'll be back soon. [临时分别]

Goodbye, forever! [决绝告别]

三、文学化表达

1. 抽象寓意

No matter how beautiful the promise is, it will say goodbye. [诺言终将消逝]

The earth is round. Today's departure is for the reunion of the other day. [时空循环的哲思]

2. 情感延伸

Three years in such a hurry to leave, it is too late to embrace each other. [时光流逝的遗憾]

As she receded he waved goodbye. [含蓄的离别意象]

这些短句覆盖了日常、情感、场景及文学等多种维度，可根据具体语境选择使用。