write back (to sb) （给某人）写回信，复信

I'm afraid I never wrote back.

我恐怕从未写过回信。

She wrote back saying that she couldn't come.

她回信说她来不了。

I wrote back to Meudon at once to fix up a meeting.

我马上给缪顿回信安排会面。

write sth down

1、写下；记录下

Write down the address before you forget it.

把地址记下来，免得忘了。

2、(商) 减记，划减（资产的账面价值）

The building cost £700,000 to build, but it was written down to £300,000.

这座建筑耗资70万英镑，但减记为30万英镑。

write in (to sb/sth) (for sth) 致函（某机构）（表达意见等）

I'll write in for more information.

我要写信索取更详细的信息。

write sb/sth in(政) （在选票上）写上非候选人姓名

I think I'll write in Pat Wilson.

我想我要在选票上加写上帕特·威尔逊。

write sth into sth 把…写入（合同或协议）

They insisted that a guaranteed supply of Chinese food was written into their contracts.

他们坚持要在合同中写入保证供应中餐的条款。

write off/away (to sb/sth) (for sth) 致函（某机构）（索取资料等）

I've written off for the catalogue.

我已去函索取商品目录。

write sth off

1、( 商) 注销，销记（账项、资产等）

The World Bank is being urged to write off debts from developing countries.

敦促世界银行注销发展中国家的债务。

2、把（车辆等）毁坏，报废

His car was completely written off in the accident.

他的车在事故中完全报废了。

write sb/sth off (as sth) 认定…失败（或没有价值、不可救药等）

A lot of companies seem to write people off if they're over 50.

很多公司似乎认定50岁以上的人都没有价值了。

write sth out 把…全部写出

We had to write out a list of ten jobs we'd like to do.

我们得列出10种我们想做的工作。

write sb out (of sth) 去掉（系列电视剧或广播剧中的角色）

When Angie was written out of 'Eastenders' her character went to Spain to open a bar.

在《伦敦东区人》中扮演的角色到西班牙开酒吧去了后, 安吉就不再出场了。

write sth up （利用笔记等）详细写出

He wrote up his visit in a report of over 600 pages.

他将自己的访问整理成了一份600多页的报告。