(2)选词填空：for，of

　　①It is so kind of you to do me such a good favour.

　　②I don't think it right for you to say so absurd a requirement.

　　(3)句型转换

　　To give up smoking is right.

　　→It is right to give up smoking.

　　2．动名词作主语

　　(1)动名词作主语常表示一般性的、习惯性的动作或状态，动名词有时态和语态的变化，且谓语动词通常用单数形式。

　　Saying is easier than doing.

　　说比做容易。

　　Having seen a lot of the world in one's youth is a good thing.

　　年轻时多见见世面是件好事。

　　Being laughed at in public is what you will never want to happen to you.

　　被当众嘲笑是你永远不想发生在自己身上的事情。

　　(2)动名词作主语时，可位于句首和句末。动名词位于句末时用it作形式主语。常见句型有：

　　It is no use waiting here.

　　在这儿等无济于事。

　　It is worthwhile spending some time doing this job.

　　花点儿时间做这项工作是值得的。

　　(3)动名词作主语时的逻辑主语：动名词作主语时可以有自己的逻辑主语，"逻辑主语＋动名词"叫作动名词的复合结构。动名词作主语时，逻辑主语的常见形式：

His leaving is a great loss.