1、risk的基本意思是“冒…的危险”,含有“以…孤注一掷并愿意承担后果”的意味。可指冒由于做某事而发生另一不幸之事的风险。也可指虽然明知做某事会产生不幸后果,但仍不顾一切地进行。
2、risk用作及物动词,接名词、代词、动名词(不接动词不定式)作宾语。可用于被动结构。
（1）S+～+ n./pron.
He is not willing to risk a single soldier.
他不愿使任何一个战士遭受危险。
Don't risk your health.
不要拿你的健康冒险。
（2）S+～+ v -ing
Don't risk being late.不要冒迟到的危险。
They were willing to risk losing their jobs.他们甘愿冒丢失工作的危险。
3、risk用作名词表示危险，风险，投资报酬的风险
You are taking a big risk driving so fast.你开车这样快是在冒很大危险。
He knew this secret represent a security risk.他知道这个秘密会对安全造成危险。
4、risk用作名词的短语
at one's own risk 自担风险
at risk 有危险
at risk to 冒失去…的危险
at the risk of 冒可能…的危险
run the risk of 冒自身危险做某事
take risks 冒险做可能失败的事