I don't because I have to drive home after the party.画出定状补
问题描述：
I don't because I have to drive home after the party.画出定状补
答
I(主) have to（状语） drive（谓） home（宾） after the party（补语）
I don't because I have to drive home after the party.
整句话来看because 后面的话都是补语
前面I don't 后面省略了前面语境（问题）的谓语宾语.
个人见解.望高人指点.