不同的名词,对这两种后置定语的选择是有区别的,有的只能用to do,有的只可用of doing,有的两种都可以.现分述如下: ⑴will, willingness, suggestion, conclusion, decision, permission, agreement, refusal, determination, proposal, resolution等,一般用不定式作后置定语. 如: mary has the will to win the first prize.(不用of winning) 玛丽有获得一等奖的决心. he has drawn a conclusion to go abroad with his family.(不用of winning) 他已作出了携家去国外的决定. ⑵hope, risk, possibility, impossibility, probability, intention, prospect, responsiblility, aim等,一般只能用of doing作后置定语. 如: in fact,tere is no hope of their winning the game. 事实上,他们没有希望赢得这场比赛.(不能说for them to win) he will run the risk of losing his life to save the child. 他将冒生命危险去救那个孩子. ⑶way, chance, need, necessity, right, freedom, power, opportunity,ability等,既可用不定式短语,又可用of doing短语作后置定语. 如: their chance to go(of ging) abroad was lost. 他们失去了出国的机会. he has the right to do (of doing) that. 他有权那样做.