【几点用法说明】
(1) 有的动词后接动名词作宾语时通常带有逻辑主语：
The rain prevented his coming. 下雨使他不能来。
Excuse my opening your letter by mistake. 原谅我不慎把你的信拆开。
(2) 有的动词(如advise, allow, forbid, permit等)后虽然不能直接跟不定式作宾语，但可接不定式作宾语补足语：
He advised buying a computer. 他建议买台电脑。
He advised her to buy a computer. 他建议她买台电脑。
(3) 有些动词(如consider, understand, discuss等)虽不接不定式作宾语，却可接“疑问词+不定式”作宾语：
Have you considered how to get there? 你是否考虑过如何到那儿去?
She doesn’t understand how to look after him. 她不知道应如何照顾他。
We discussed what to do and where we should go. 我们讨论了该怎么办及到哪里去。