??咱们可以说他knowledgeable（有才智的；常识广博的）

She’s very knowledgeable about art.

她对艺术很熟行。

Graham’s very knowledgeable about wines.

格雷厄姆对葡萄酒非常晓得。

或许an expert on（某方面的专家），

He’s an expert on ancient Egyptian art.

他是古埃及艺术的专家。

He considers himself an expert on the subject.

他自认是这学科的专家。

或许know all about（对此一目了然）：

I know all about being poor.

我太晓得贫穷了。

A friend is someone who knows all about you and still loves you.

兄弟是一个对你一目了然却仍然爱你的人。

或许know all there is to know about（晓得一切关于它的常识）：

Truth is, I’ll never know all there is to know about you just as you will never know all there is to know about me.

实际是，我永久不可以能晓得关于你的悉数，就像你永久不会晓得关于我的悉数相同。

有时分咱们也可以说或人knows a thing or two about（略知一二）。

可是，我们懂得，说得越轻描淡写，越自傲，绝不料味着他们真的只“略知一二”:

My name is Jester, and I know a thing or two about this place.

我叫杰斯特，我对这个地战略知一二。

Jack knows a thing or two about kids. He’s got five.

杰克对孩子略知一二。他都有五个孩子了。

假定有人是专家，他们know what they’re talking about：

She knows what she’s talking about.

她晓得自个在说啥。

假定有人对一个当地非常晓得，他们know it like the back of their hand（非常晓得，一目了然）：

I grew up here; I know the place like the back of my hand.

我在这儿长大，我对这个当地一目了然。

He’s a taxi driver, so he knows London like the

back of his hand.

他是个租借车司机，所以他对伦敦一目了然。

2，假定一自个对某一事物不理解

假定有人对某一事物一无所知，

他们don’t have a clue（不晓得，毫无条理）：

I don’t have a clue where she lives.

我不晓得她住在哪里。

Don’t ask him to do it-he doesn’t have a clue!

别让他做,他对此一无所知！

或许他们don’t know the first thing about（一无所知）：

I don’t know the first thing about looking after children.

我对照看孩子一无所知。

I’m afraid I don’t know the first thing about cars.

恐怕我对轿车一无所知。

假定你了解不了，

你don’t get it（不理解，不理解）：

You just don’t get it! People avoid you because you offend them.

你就是不理解！我们避开你是因为你老开罪他们。

或许你can’t get your head around it（搞不理解；搞不理解）：

I just can’t get my head around these tax forms.

我就是搞不理解这些税单。

也可以这样说：it’s (way) over one’s head（太难了；了解不了）:

The explanation went completely over my head.

这个说明我根柢无法了解。

二、会/不会干事

1，假定懂怎么做，

可以说他们know how to do it：

I don’t know how to do it.

我不晓得怎么做。

You never knew how to do anything else.

你历来不晓得怎么做其他的事。

或许他们 are good at it（擅长）:

I’ve never been very good at drawing.

我历来不擅长画画。

She’s very good at motivating her students.

她很长于鼓励学生。

也可以运用恰当于be good at的表达方法，它们悉数运用介词at:

be brilliant at, be an expert at, be a genius at:

She’s brilliant at handling difficult clients.

她很擅长唐塞难搞的客户。

Robin is an expert at cheesemaking.

罗宾通晓制造奶酪。

He’s a genius at organizing people.

他是个长于组织。

2，假定不理解怎么做，

就说他们are no good at it：

I’m no good at speaking in public.

我不擅长在公共场合说话。

I’m no good at dancing – I always get hopelessly out of step.

我不擅长跳舞-我老是合不上拍。

也可以说或人hasn’t got a clue on how to do something（不晓得该怎么做）：

I haven’t got a clue on how to spend the National Day holiday.

我不晓得国庆假期怎么过。

图像选自网络，版权为原作者一切！