4 sentences for 為 (wéi — by)

1. 他一直为病痛所苦。

   tā yī​zhí wéi bìng​tòng suǒ kǔ.

   He has been suffering from illness and pain.

   Source: Dong Chinese Dictionary

2. 也许是时候让她为我们所用了。

   yě​xǔ shì shí​hou ràng tā wéi wǒ​men suǒ yòng le.

   Perhaps it's time to make her useful to us.

   Source: OpenSubtitles

3. 为人所笑。

   wéi rén suǒ xiào.

   To be laughed at by others.

   Source: Dong Chinese Dictionary

4. 这种卑劣的行为是为社会公德所不容的。

   zhè zhǒng bēi​liè de xíng​wéi shì wéi shè​huì gōng​dé suǒ bù róng de.

   Such despicable behavior is not tolerated by social ethics.

   Source: Dong Chinese Dictionary