will have comepletely与will completely have（副词位置）

问题描述

错误：We will completely have finished the work when you arrive, if you take the 10:05 train.

正确：We will have completely finished the work when you arrive, if you take the 10:05 train.

分析：completely 习惯上要放在所有助动词之后。

我的疑问：上面“分析”中说“completely 习惯上要放在所有助动词之后”是怎么回事？副词不是通常都放在第一个助动词之后吗？

老师答疑

黎老师：

completely 是一个完整性副词。“完整性副词通常放在所有助动词后面。I will have completely finished by next June. 到明年6月，我将全部完成。( 不能说：I will completely have finished ...)”（《牛津英语用法指南》第三版）