certain to do/certain of doing

certain to do 与 certain of doing 在语义上有很大的差别。Manchester are certain to win. 这里的 are certain to 表达的是说话人的观点: 说话人确信、肯定。全句的意思是: 曼彻斯特队肯定会赢。而 John is certain of winning. 则是指主语(John)确信自己会赢。全句的意思是: 约翰确信会取胜。请分析下列各句中 certain to do 与 certain of doing 的意义:

1. You are certain to be happy with them. 你跟他们在一起肯定会很愉快的。(说话人的看法)

2. No one can be certain of living till seventy. (Wood) 谁也不能肯定自己能活到70岁。

3. Janet is certain $\left\{ \begin{array}{l} to be put on the committee. \\ of being put on the committee. (\text{CGEL}) \end{array} \right.$

珍妮特 $\left\{\begin{array}{l} 一定会被派入委员会。\\ 确信能被派入委员会。\end{array}\right.$

4. John is certain $\left\{\begin{array}{l} to be invited. \\ of being invited.\end{array}\right.$ 约翰 $\left\{\begin{array}{l} 一定会被邀请。 \\ 确信能被邀请。\end{array}\right.$

(参见 sure to do/sure of doing)