英语中动词主要分四类：1、be动词/系动词 2.情态动词 3.助动词 4.实意动词
副词修饰前3类动词，副词放后面。 修饰第4类动词，副词放前面。
副词用来修饰动词时要放在动词的后面，如果动词带有宾语要放在宾语的后面
He looked carefully
He did his homework carefully
