risk to do

不对
risk在事故、疾病、处境中都可以用它
He saved my life at the risk of losing his own.
他冒着生命危险救了我的性命.
He was ready for any risks.
他准备冒一切风险.
作动词时有以下意思：
1.使遭受危险,以...作为赌注
The brave man risked his life in trying to save the child.
那位勇敢的人冒着生命危险试图救那孩子.
2
.risk doing冒险做……事,冒...的风险
They risked losing their jobs.
他们冒着失去工作的风险.
By criticizing her boss,she risked losing her position.
批评老板使她冒失去职位之险.
3.冒险于[+v-ing]
I don't think they will risk holding an election.
我想他们是不会冒风险举行选举的.
risk后不能加不定式,但adventure可以加to do不定式,在作动词时两者都可作及物动词,而adventure也可作不及动词,这就造成两者在不定式上的使用区别