英文短语：have a good knowledge of

knowledge一词大家都比较熟悉，表示

[U,sing]information and understanding about a subject which a person has, or which all people have. 知识; 学识

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经常作为不可数名词[U]，在表示了解某种特定知识时，该词可作为可数名词，但为单数形式[sing],如：

have a good/ wide/ general/ thorough limited/…knowledge of

He has a good knowledge of London.

他对伦敦有所了解。

I have a thorough knowledge of the English language.

我精通英语.

He has a wide knowledge of painting and music.

小他在绘画和音乐方面知识渊博。

除此之外，该词还可以表示：

[U] the state of knowing about a particular fact orsituation 知晓;知悉;了解

He denied all knowledge of the affair.

他否认知道此事。

She sent the letter without my knowledge.

她背着我把信寄了出去。

The filmwas made with the Prince’s full knowledge and approval.

这部影片是在王子充分了解和认可的情况下拍摄的。

补充表达

safe/secure/… in the knowledge that

feeling safe or secure… because one knows something specified知道…而…

She was impatient in the knowledge that timewas limited.

她知道时间有限，所以很着急。

| went to sleep secure in the knowledge thatI was not alone in the house.

我知道当时不是只有我一人在房子里，就放心地睡觉了。

They could relax safe in the knowledge that they had the funding for the project.

他们得知工程拨款已有着落时就感到踏实轻松了。

be common/ public knowledge

to be sth that everyone knows, especially in aparticular community or group 常识;众所周知

It is common knowledge that swimming is one of the best forms of exercise.

游泳是最好的运动之一是普遍常识。

It’s common knowledge that smoking and cancer are closely linked.

众所周知，吸烟和癌症是密切相关的。

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come to sb’s knowledge

(formal) to become known by sb被某人知道;被某人获悉

It has come to our knowledge that you havebeen taking time off without permission.我们了解到你们时常未经允许就不上班。

It has come to my knowledge that you are a doctor now.

我听说你现在已经是医生了。

to one’s knowledge

from the information you have, although you may notknow everything 据某人所知

—Are they divorced?

—Not to my knowledge.

—他们离婚了吗?

—据我所知没有。

Alec never carried a gun to my knowledge.

据我所知亚历克从不带枪。