basic functions of prepositions
14.2
note
the preposition is part of the following fixed expressions:
跟 (someone) 开玩笑
跟 (someone) 開玩笑
gbn (someone) kai wánxiào
to play a joke on (someone)
他哥哥喜欢跟他开玩笑。
他哥哥喜歡跟他開玩笑。
Ta gbge xhhuan gbn ta kai wánxiào.
His older brother likes to play jokes on him.
对 (something) 有兴趣
對 (something) 有興趣
duì (something) yiu xìngqù
to be interested in (something)
我对科学有兴趣。
我對科學有興趣。
wi duì kbxué yiu xìngqù.
I am interested in science.
14.2.8 Prepositions used in formal speech and formal written language
To indicate beneficiary or recipient
为/為 wèi ‘for/on behalf of ’
我们应该为人民服务。
我們應該為人民服務。
Wǒmen yīnggāi wèi rénmín fúwù.
We should serve the people.
(serve for the people)
To indicate the source (no movement)
由 yóu ‘from’
由此可见,人民都喜欢自由。
由此可見,人民都喜歡自由。
Yóu cǐ kě jiàn, rénmín dōu xǐhuan zìyóu.
You can see from this that everyone likes freedom.
To indicate location in time or space
于/於 yú ‘at, in, on’
谨定于三月十五日在人民大会堂开会。
謹定於三月十五日在人民大會堂開會。
Jǐndìng yú sānyuè shíwǔ rì zài rénmín dàhuìtáng kāi huì.
The meeting is respectfully set at March 15 in the Great Hall of the People.
To indicate a point in time (no movement)
自从/自從 zìcóng ‘from, (ever) since’
自从中国开放以后,人民的生活水平提高了。
自從中國開放以後,人民的生活水平提高了。
Zìcóng Zhōngguó kāifàng yǐhòu, rénmín de shēnghuó shuǐpíng tígāo le.
(^) Ever since China began to open up, the standard of living of its people has improved.