核心问题
（a）You've acted foolishly.
(b) He foolishly locked himself out.
请问 foolishly 应放在动词之前,还是应放在动词之后?
词典解答
foolishly 既可放在动词之后,也可放在动词之前,但它的功用是不同的。放在动词之后,它是修饰动词的,如句(a);放在动词之前,则是修饰整个句子的,可叫做句子状语,如句(b)。He foolishly locked himself out. ≈ It was foolish of him to lock himself out. 他把自己锁在门外,真是太傻了。
在后一情况下,foolishly 也可放在句首:
Foolishly I left my coat at home. (Palmer) 我把大衣忘在家里了，真是太笨了。
(参见 wisely, delightfully, kindly)