为什么不告诉她你打算辞职，尽快把这件事了结了呢？

Why not tell her you're quitting and have done with it?

《牛津词典》

“嘿,”她突发灵感,“你为什么不邀请他们来这里呢？”

"Look," she said, getting a brainwave, "why don't you invite them here?"

《柯林斯英汉双解大词典》

她为什么不坚持以舞蹈为职业呢？

Why didn't she stick to dancing as a career?

youdao

She didn't know why but she listened to him after all-- he was Gandhi.

她不明白为什么但还是听了他的话-,因为他是甘地。

哈佛公开课 - 幸福课课程节选

But you can't put your finger on what the source of that confrontation was.

但是你还是搞不明白为什么她老是要跟你对着干。

I don't know 课堂 - SpeakingMax英语口语达人

I don't know why she dislikes me.

我真不明白她为什么不喜欢我。

I don't know 课堂 - SpeakingMax英语口语达人