不是副词修饰副词。是少数方位副词和时间副词可以作介词宾语。如from now on, before then, near here, around there, from behind, till then.等。偶尔两个介词可以连用，可视为一个介词短语做了另一个介词的宾语。如：from behind the door, from under the bed,since before the war, except at parties. 等.这是特殊情况。绝大多数情况下，介词后应该是名词性结构的位置。

同意曹老师的分析，少数方位副词和时间副词可以作介词宾语。如：

Put the keys under there. 把钥匙放在那下面。《牛津高阶英汉双解词典》

From then on, they were taking no chances.从那时起，他们就不再冒险了。《柯林斯高阶英汉双解词典》

第一个追问：

请参看刘老师的解答：

http://ask.yygrammar.com/q-23075.html

第二个追问：

如果in, up, down, out...等词位于地点副词here, there或介词短语前用以加强语气或强调具体方位的，应视为副词而不是介词。如：

Would you come in here a moment, please? 请进来一下好吗？

Let's go up there and have a look.我们上去看看。

Now sit down here, and wait till I come. 在这儿坐下来吧，等着我回来。

I heard the sound of gunshots out in the street.我听着外面街上有枪炮声。

They live near here.

这个可以用around here, nearby here, near here，around here 吗？

这是两个副词一起修饰谓语吗？

解答如下：

我个人解答观点为：建议不要再继续分析，直接把它看作一个“副词短语”作地点状语。（如果一定要分析，可以理解“副词+副词构成短语副词”）

(1)near here adv.  在附近

Is there a stationer's near here?  

这附近有没有文具店？

 There's an excellent seafood restaurant near here.  

离这儿不远有家非常不错的海鲜馆.

 Is there a Ladies near here?  

附近有女厕所 吗 ?

 Is there any post office near here?  

附近有没有邮局?

Is he anywhere near here?  

他在附近某处 吗 ?

 " Oh,'said Mrs. Vance, " that's right near here, isn't it? "  

“ 喔, "万斯太太说, ” 那就在这附近, 是不是? ”

 No , there isn't one near here.  

不, 这附近没有.

Is there a computer store near here?  

请问这附近有计算机专卖店 吗 ?

 " You live near here, Nick? "  

“ 你住在这附近吗, 尼克? ”

. 'Isn't there a stream somewhere near here?'  

“ 附近还有条小溪? ”

.Is there a river near here?  

“这附近有河 吗 ?”

. There is a new music hall near here under construction.  

附近正在建造一座新的音乐大厅.

. Do you live near here?  

你住在这附近 吗 ?

. She was in a commune near here.  

她在这里附近的一个公社工作.

. Is there a cinema near here?  

附近有电影院 吗 ?

(2)around here 在这周围

Methane gas does collect in the mines around here.  

周围的矿井里的确有沼气聚积。

Seems like news travels pretty fast around here.  

这里似乎消息传播得很快。

There is nothing to do around here.  

在这无事可做。

Who is the least popular man around here?  

这里谁最不受欢迎？

How long have you lived around here?  

你住在这一带有多长时间了？

What can I do around here?  

我在这儿能做点儿什么？