介词on 的意思？

一、on译为"在……后立即……","在……时","在……之后"其后跟动名词或名词。例如:

On thinking about the idea, I decided against it.经仔细考虑,我决定反对这个构想。

On arriving there, we all set to work.我们一到那儿,就开始干起来。

On reaching Paris, they called at the wine shop.一到达巴黎,他们立即就到那家酒店去了。

The woman cried out on hearing the strange whistle.那妇女一听到那奇怪的哨音便立即大叫起来。

The students stood up on the entrance of the headteacher.班主任一进来,学生就起立。

二、on译为"附着在……上".例如:

She had a red hat on her head.她头戴一顶红帽子。

Have you got any money on you?你身上有钱吗?

三、on译为"依靠","根据".例如:

People in the south live on rice.南方人以大米为主食。

That idea is not based on facts.那观点不是以事实为根据。

四、on译为"以……方式","通过"。例如:

I heard the happy news on the radio.我是通过收音机听到这个喜讯的。

They left on an early train.他们乘早班火车离去的。

五、on指时间、译为"在……"。