Question

I know it's difficult to do that.对吗

know about怎么用

Answer 1

I know it's difficult to do that 是对的。。
know about基本释义 同近义词了解，知道……的情况；知道关于
了解，知道……的情况；知道关于
realize, catch, learn about
know nothing about一无所知

know something about…了解一些有关于…

know little about关于道很少；对……知之甚少

know something about对…有所了解

know little about paintings对绘画了解很少

know everything about了解有关……的一切

Not know beans about什么也不懂

know everything about you知道关于你的一切事情

know much about知道很多关于
know about
知道，了解，知道…的情况：
I happened to know about him.

我碰巧了解他的情况。

I know nothing about this matter.

我对此一无所知。

Tell me what you know about our company.

告诉我你对我们公司有什么了解?

Much of what we know about nuclei comes through scattering experiments.

我们现在对原子核的许多认识来自散射实验。

This site will tell you everything you need to know about Hammersmith London Regatta.

这个地点将告诉你你需要关于铁匠伦敦赛船会知道的一切。

Answer 2

I know it's difficult to do that.对吗
正确
know about怎么用
know about 知道（听说的那种）。

know about 译为“了解”，“知道……情况”。
如：...There's one thing I'd like to know about．有一件事我想了解一下。
I know you
我认识你
I know about you
我听说过你（但我还没机会当面认识你，还不了解你。）