为实际所必需

be necessary for the sake of practicality

为仇者快，亲者痛

bring joy to one's enemies and sadness to one's friends

他为人所骗。

He was cheated by somebody.

这种艺术形式为广大人民所喜闻乐见

this art form is adored by the masses

所作所为

one's behaviour

聘请老工人为顾问

hire an old worker as a consultant

选他为代表

elect him as representative

任他为秘书

appoint him as secretary

以...为饵

use ... as bait

以此为例

use this as an example

以...为借口

use ... as an excuse

以助人为乐

help others for pleasure

以...为条件

on the condition that...

以...为依据

use ... as evidence

以...为目的

with the aim of ...

合而为一

become one

化为乌有

vanish into thin air

变沙漠为良田

turn desert into farmland

分为若干项

split into a certain number of items

每十人为一组

ten people to a group

小心为是

play it safe

长为两公尺

measure two metres in length

为时尚早

too soon

期限为三个月

it lasts for a three-month period

假期为一个月

the holiday is a month long

运费每吨公里为五元。

The freight charge is five yuan per ton-kilometre.

中华人民共和国首都为北京。

The People's Republic of China has Beijing as its capital.

关心他人比关心自己为重

be more concerned with looking after other people than oneself

何以家为？

why do I need a home anyway?