1. take a risk: to decide to do something, even though you know that something bad or harmful might happen as a result

例：

I knew we were taking a risk when we lent him the money. （我知道借钱给他是有风险的。）

Nobody is successful in business without taking a few risks. （没有人做生意可以不冒险就成功的。）

Climbers like the thrill that taking risks gives them. （登山者就喜欢冒险带来的刺激。）

2. risk: to do something that you know might have a harmful or negative result

例：

risk doing something

I decided to risk looking for a place to stay when I got there, rather than booking in advance. （我决定放手一搏，到那儿再找住的地方，不提前预定了。）

risk it

Road conditions were supposed to be pretty bad, but we decided to risk it. （路况应该很差，但我们还是决定冒险一试。）

3. take a chance: to decide to do something even though there is a risk, because you think that you will succeed

备注：口语中常用''chance it''。

例：

Victor took a chance and set up his own company, which has been very successful. （维克多决定赌一把，自己创业，现在事业已经很成功了。）

He chanced it with a long three-point shot at goal in the last minute of the game. （比赛的最后一刻，他孤注一掷投了个超远三分球。）

4. stick your neck out: to do something or give your opinion about something, even though you know there is a risk that you are wrong or will be criticized

备注：''stick your neck out''常用于非正式的场合。

例：

The evidence is good, but I won't stick my neck out until all the data is in. （这个证据很有力，但是在所有数据到位之前，我不会冒险做判断。）

Look, I'll stick my neck out and say it'll be finished by tomorrow evening. （听着，我就把话放在这里——我明晚之前一定会完成。）

I'm going to stick my neck out with some predictions for the next two years. （我要冒昧预估一下未来两年的情况。）

5. at your own risk: if you do something at your own risk, it will be your own fault if something bad happens - used especially on official signs and notices to warn people

例：

Visitors who park their cars in the corner lot do so at their own risk. （到访者如果把车停在拐弯处，一旦丢车，责任自负。）

Journalists were allowed into the area, but only at their own risk. （记者可以进入这一区域，但有什么事得自己负责。）

6. at the risk of doing something: say this when what you are going to say or do might make someone angry, upset etc.

备注：''at the risk of doing something''常用于口语中。

例：

A school has to be able to make rules about students' dress, even at the risk of upsetting parents. （学校必须定规则来规范学生的穿着，即使会得罪家长也要这么做。）

At the risk of sounding like your mother, you'd better dress up warm. （就算听起来像老妈子我也要说，你最好穿得暖和点。）

This is a point which—at the risk of being boring—I must emphasize once again. （就算你们觉得我啰嗦，我也必须再强调一次。）

7. risk-taking: when people deliberately take risks in order to achieve something - use this especially about actions in business or dangerous sports

例：

Starting a business always involves some risk-taking. （创业总是有风险的。）