I entirely agree with her. （程度副词）

He drives extremely carefully. （方式副词）

一般而言，程度副词和方式副词修饰动词时，放在之前或之后均可。

但是，如果有宾语则放在宾语后，不可放在动宾之间。

如果是副词词组，如 extremely carefully，因太长的缘故，为了照顾句子匀称，应放在动词之后。结论是：

I entirely agree with her. （正）

I agree with her entirely. （正）

He drives extremely carefully. （正）

He drives his car carefully. （正）

He carefully drives his car. （正）

He drives carefully his car. （误）