is impossible to do..."。例如:

There is no joking about such a matter.

这种事开不得玩笑。

There was no knowing when he would leave.

无法知道他什么时候离开。

2.v.-ing形式作宾语

(1)v.-ing形式作动词的宾语。可接动名词作宾语的动词有enjoy,include,excuse,practic

-e,advise,suggest,mind,delay,forbid,keep,consider,miss,finish,appreciate,can't help,risk,admit等。例如:

Mary is considering changing her job.

玛丽正在考虑换工作。

Would you mind opening the door?

打开门你介意吗？

I enjoy chatting with them.

我喜欢和他们聊天。

We first practise writing summaries.

我们先练习写提要。

The boy admitted being careless.

这孩子承认他太粗心大意了。

(2)v.-ing形式作介词宾语。常用的短语有be good at,dream of,care about,devote...to,be concerned about,look forward to,be interested in,be