He planned to end the welfare system as we know it.他计划终止现行的福利制度。

civilisation as we know it我们所熟悉的文明

What are you going to wear?—Blessed if I know.你要穿什么？——我根本不知道。

For all we know, our daughter is dead.据我们所知, 我们的女儿死了。

You could be a blackmailer for all I know.就我看, 你可能会是敲诈者。

I'd really like to see you again and get to know you better.我真想再次见到你并且更多地了解你。

He's quite nice once you get to know him.一旦你和他混熟之后, 他还是挺好的。

The new neighbours were getting to know each other.新邻居们逐渐开始彼此了解。

Gradually we got to know the river.逐渐地我们开始熟悉那条河。

A boat trip is the ideal way to get to know the city.乘船旅行是了解这个城市的理想方式。

The old man spoke God knows how many languages.天知道这个老头儿懂多少种语言。

Heaven knows what he plans to do now.鬼知道他现在打算怎么办。

Lord knows, the murderer might still be out there.鬼知道, 凶手极有可能还在那里。

God knows I've tried with that boy.天晓得我已经为那个男孩费了多少力气了。

When's he coming back?—How should I know?他什么时候回来？——我怎么知道？

How was I to know you'd be back so soon?我怎么会知道你会这么快就回来？

How was I to know the letters were fakes?我怎么知道这些信件是假的？

How did he meet your mother?—I don't know.他是怎么见到你妈妈的？——我也不确定。

I don't know if … or I don't know whether …我不确定是否…

I don't know whether she's coming.我不确定她是否要来。

I don't know how … or I don't know what … or I don't know why …(indicating criticism)真想不到, 居然(表示批评某人的行为)

I don't know how he could do that to his own daughter.真想不到他竟对自己的女儿这样。

I don't know how you can think that!我想不到你会那样想！

I don't know that …我不认为…

I don't know that it's made the decision any easier.我认为这不会使作出决定变得容易。

I don't know that I agree.我并不同意。

It's really expensive.—Oh, I don't know. It'll last for ages.这确实是太贵了。——哦, 我可不这么认为。它能用很久。

He should just resign.—I don't know about that.他就该辞职。——我可不这么认为。

People tell you their problems, right?—Oh, I don't know about that.人们把他们的问题告诉你, 是不是啊？——哦, 没有啦。

I don't know about the rest of you, but I'm hungry.我不知道你们怎么样, 但是我饿了。

I don't know about you, but I've had just about enough of this.我不知道你怎么想, 但我已经受够了。

Well, if you must know, I've been in prison.好吧, 如果你非要知道的话, 我进过监狱。

This country is so awful.—I know, I know.这个国家太糟糕了。——的确是, 的确是。

It's a long way.—Yes, I know.这很远。——是的, 我有同感。

There are trains straight from Cambridge.—I know, but it's no quicker.有直接从剑桥开出的列车。——我知道, 但也不快。

That shirt's a real bargain.—I know, but it's too small.那件衬衫的确很便宜。——我知道, 但是太小了。

I know what. Let's ask Dan to help.我知道了。咱们去找丹帮忙吧。

I know. We could google it.知道啦。我们可以用谷歌搜索一下。

I know what you're going through.我知道你在经受什么样的煎熬。

I know how you feel.我理解你的感受。

None of us stayed long. I mean, the atmosphere wasn't-well, you know what I mean.我们都没待太久。我的意思是, 气氛并不是——唔, 你知道我的意思。

She was a bit stuck up, know what I mean?她有点自命不凡, 你明白我的意思吧？

Is he married?—Not that I know of.他结婚了吗？——据我所知没有。

You weren't to know – in fact, I think I'm the only person who does know.你不会知道——实际上, 我想我是唯一真正知道的人。

Don't listen to him, what does he know?别听他的, 他知道什么？

I always felt his attitude was, 'What do you know?'我觉得他总是那种“你懂什么？”的态度。　

Well, what do you know! They're married.哎呀, 真没想到！他们结婚了。

You don't know how good it is to speak to somebody from home.你不知道和家乡来的人说说话感觉有多好。

You don't know what this means to me.你是不知道这对我意味着什么。

The conditions in there are awful, you know.你要知道, 那里的条件很艰苦。

You know, it does worry me.你要知道, 这实在让我担心。

He's generous and, you know, very nice, very polite.他很大方, 而且, 你知道, 他很友善, 也很有礼貌。

I thought I'd, you know, have a chat with you.我想我应该, 呃, 和你谈谈。

Wear the white dress – you know, the one with the short sleeves.穿那件白裙, 你知道的, 就是那件短袖的。

That's Joe – you know, the guy I met last night.那就是乔——你是知道的, 昨晚我遇见的那个家伙。

You know that girl I was seeing? Well, she turned out to be married.你知道和我约会的那个女孩子吗？嗯, 没想到她已经结婚了。

There might be an even bigger one.—I doubt it, but you never know.可能还有个比这个大的——我觉得有点儿悬, 但也很难说。

You never know, I might get lucky.很难说, 我也许会交好运呢。