He likes to show off how well he speaks French.

他喜欢向人展示他法语讲得有多好。

《牛津词典》

How well do you know Carla?

你对卡拉有多了解？

《牛津词典》

"How well do you know her?"—"Not very."

“你对她有多了解？” —“不是很多。”

《柯林斯英汉双解大词典》

Think of your family or friends. How well would those relationships work without trust or with a broken trust?

VOA: special.2009.12.19

- You open Brooks and you find yourself really apart perhaps-- I don't know how well all of you are acquainted with the texts of Freud.

也许你们看布鲁克斯的作品时会觉得很头疼-,我不知道你们对弗洛伊德那几篇文章理解的如何了。

耶鲁公开课 - 文学理论导论课程节选

So it's a measure of how well we can do to run the refrigerator.

这是衡量,我们运行制冷机的一个量。

麻省理工公开课 - 热力学与动力学课程节选

For the most part, however, I was impressed by how well cars avoided killing us.

FORBES: Magazine Article

That ultimately is the measure for most Americans of how well the economy is doing.

WHITEHOUSE: President Obama on the Economy & Financial Reform

How well a person recovers from stroke is highly variable and highly individual, Antoniello said.

CNN: Stroke recovery: One woman's story