Question

在英语里，主语后面可不可以直接接副词

Answer 1

不可以。
1. 主语后面跟动词（谓语动词）就不用说了。
2. 根据需要还可以跟：
名词性的词或词组：We the students from China believe that......
副词：I really don't understand why the problem is getting worse.
形容词分词短语：The boys known as bad guys came here yesterday.

Answer 2

主语可以接副词：He often gets up late.他经常起的很晚。often就是频率副词。