英文语法难点分析：to do和of doing  

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，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。