还在用教科书上的英语和老外交流吗？是时候改改了，快学些地气儿的表达方式，让自己的口语活泼起来。

I owe you
借条；欠据

例句：
I'll need an I owe you because I don't have any  money.
我没钱了，得找你开张借条了。

Give it to me straight
有话直说

例句：
How bad is it? Just give it to me straight.
情况到底有多糟？你就直接告诉我吧。

Don't be a stranger
别变生疏了（保持联系）

例句：
Keep in touch man. Don't be a stranger.
保持联系啊伙计，别生疏了。

Get a life
别烦我；做点有意义的事

例句：
Would you stop bothering me and get a life!
你能不能别烦我了，一边儿玩儿去。

Nature calls
内急；要上厕所

例句：
Can you pull the car over at a rest stop as soon as you can? Nature  calls!
你能不能快点找个休息站点停一下车？内急！

What's eating you?
你怎么了？

例句：
You're in a bad mood today. What's eating you?
你今天情绪不太好啊，到底怎么啦？

Take a hike
滚蛋

例句：
He asked for my phone number and I told him to take a  hike.
他问我要电话号码，我叫他滚蛋了。

I'm hosed
我完蛋了

例句：
I am hosed. My mom found out I skipped school last  week.
这下惨了，我妈发现我上周翘课了。

Hang in there
坚持下去

例句：
Hang in there. I am sure things will work out in the  end.
坚持住，我相信问题最后解决的。

Since when
从什么时候起（太阳打西边出来了）

例句：
Since when have you been interested in my  opinion?
你啥时候起也开始关心我的意见了？

Dressed to kill
打扮迷人

例句：
She must be trying to impress him. She is dressed to  kill.
她一定花了很大心思要引他注意，穿得这么花枝招展。

It totally slipped my mind
完全忘记要做的事

例句：
There was something I needed to do today but it totally slipped my  mind.
我今天有个什么事要做，但是我完全想不起来了。

Let's go fifty-fifty
平分账单

例句：
Let's split the tab for drinks fifty-fifty.
喝酒的账单咱们平分吧。

Good for nothing
一无是处

例句：
That girl is a good for nothing troublemaker.
那姑娘就是个一无是处的捣乱鬼。

You bet
当然；肯定地

例句：
You bet I'll be at your game. I would not miss  it.
我当然会去看你的比赛，绝对不会错过。