本句的正常词序是：
Take such as you need from the drawer.
句意为：你需要什么就从这抽屉里拿。
要理解此句，首先要弄清这里的 such as 的用法——它在此相当于what, whatever, anything that 等。如：
Such as remains after tax will be yours when I die. 我死以后全部财产除了交税以外都给你。(=Everything that remains after tax will be yours when I die)
对于Take from the drawer such as you need / Take such as you need from the drawer 来说：
主语：you 被省略了（因为这是一个祈使句）；
谓语：take；
宾语：such as you need；
状语：from the drawer。