代为

dài wéi shuō qíng

代为说情

intercede on somebody's behalf

dài wéi tóu piào

代为投票

vote by proxy

dài wéi bǎo guǎn

代为保管

take care of something for someone

qǐng dài wéi xiàng tā zhì yì

请代为向他致意。

Please give him my regards.

tā dā ying lín shí dài wéi zhào gù wǒ de hái zi

她答应临时代为照顾我的孩子。

She promised to baby-sit with my children.

yīn wèi tā shēng bìng suǒ yǐ wǒ dài wéi zhí bǐ

因为她生病，所以我代为执笔。

As she was ill, I wrote on her behalf.