介词on的用法

Question

如题所述

Answer 1

on 的用法

1. 关于、基础、靠、著论

This afternoon we are going to listen to a report on the international situation.
今天下午我们要听关于国际形势的报告。
Professor Shen will give us a talk on traveling in America.
沈教授将给我们做关于美国之行的报告。
You are wrong on all these issues.
在这些问题上你的看法都错了。
The belief is based on practical experience.
这种信念是以实际经验为基础的。
Theory must be based on practice.
理论必须以实践为基础。
The people in the south live on rice.
南方人主食大米。

The citizens live on their salaries.
城市人靠薪金生活。
You can't afford luxuries on an income of 100 Yuan a month.
靠月薪100元的收入，你是买不起奢侈品的。
Her pet dogs were fed on the choicest food.
她用精饲料喂养她心爱的狗。
He is just a scrounger who lives on other people.
他正是一个小偷，专靠损害别人过日子。

Keep the kettle on the boil =boiling.
让水壶的水一直开着。
The enemy are on the run =running.
敌人在逃跑。

另外，“on the +名词”结构，常表示动作正在进行中。例如：

on the march 在行军中 on the mend 在好转中 on the prowl徘徊，on the move活动中
on the scrounge 巧取豪夺 on the go活跃，忙碌 on the lookout注意，警戒
on the watch监视着 on the hop趁不备抓住某人

on the People's Democratic Dictatorship《实践论》和《矛盾论》
on the People's Democratic Dictatorship《论人民民主专政》
on Coalition Government 《论联合政府》

2. 着、罢、出售、偷、公、假，故意、支付，相反、准

注：口诀中的着指着火，罢指罢工，偷指偷偷地，公指出差、办公事；假指休假，准指准时。

The house next to mine was on fire.
我邻居的房子着火了。
The workers of the railway station were on strike.
铁路工人罢工了。
Grapes and big water melons from Sin kiang are on sale on a large sale.
新疆葡萄和西瓜大量上市了。

Answer 2

介词的时间用法：

时间点用 at - at 5 o'clock, at noon

时间段用 in - in 1997, in the afternoon, in the weekend

但若是星期几之前用 on - on Monday, on Friday, on Saturday evening

介词的空间用法：

准确的地点用 at - at the front desk, at my desk, at the entrance

在里面用 in - in his office, in the conference room, in the taxi

在上面用 on - on the bus, on the train, on the 8th floor （on 的概念是在上面可以走来走去的）
你的那个例：可以用in 也可以用at
at school
a) in the school building: 在学校
I can get some work done while the kids are at school.
b) British English 英式英语，求学 attending a school, rather than being at college or university or having a job:
We've got two children at school, and one at university.

in school
a) in the school building: 在学校
Sandra's not in school today.
b) American English 美式英语，求学 attending a school or university rather than having a job:
Are your boys still in school?

Answer 3

星期之前