prep2-9 不明白为什么一定要用of doing

psychepsyche

prep 2-9 TheEnvironmental Protection Agency frequently puts mandatory controls on toxicsubstances that present as little risk as one in a million chances to causecancer.
(A) as little risk asone in a million chances to cause
(B) as little risk asone chance in a million of causing
(C) as little risk asone chance in a million that it will cause
(D) a risk as little asone chance in a million for causing
(E) a risk as little asone chance in a million for it to cause
Key:B
如果D和E改成a risk as little as onechance in a million of causing也就对了


我对on chance和one倒是没什么意见，就是不明白为什么prep上面说DE改成of 就对了呢？是risk of doing 的结构？还是chance of doing的结构？很不解。如果能凭of 直接判断五个选项的正误，那倒是很高效！大家请指点。

蓝狮爱我

贴一段NN总结的idiom中的内容：
chance意思是可能性的时候应该用chance of，而不是chance that,chance

to. chance of翻译过来也就是...的概率。
example: 296. Few people realize that the chance of accidental

injury or death may be at least as great in the “safety” of their

own homes as in a plane or on the road.

chance意思是机会的时候才能用chance that/to
example: I have a chance offered by the college to visit Harvard in

August.

另外as little risk as one in a million chances和a risk as little as

one chance in a million貌似都是可以的

psychepsyche

哦，那看来这道题就是of的问题了

melissa_gao

补充一下：xdf的笔记中，提到，只能是“one chance in a million”;不

能是“one in a million chances”.