为某事做准备工作用英文怎么说

"To do preparation work" 的英语表达是 "to prepare"。

"Prepare" 是一个动词，意思是"为...做准备"，来源于拉丁语 "preparare"，意思是"准备"。

例句：

I need to prepare for my presentation tomorrow. (我明天需要为我的演讲做准备。)
We are preparing for the arrival of our guests. (我们正在为客人的到来做准备。)
She is preparing a meal for us. (她正在为我们做饭。)