副词(Adverb 简称adv.)是指在句子中表示行为或状态特征的词，用以修饰动词、形容词、其他副词或全句，表示时间、地点、程度、方式等概念。副词可分为:时间副词、频率副词、地点副词、方式副词、程度副词、疑问副词、连接副词、关系副词、表顺序的副词。

1，副词可以修饰动词,包括不定词、动名词和分词,通常位于被修饰的动词后面;修饰及物动词时,一般放在宾语 的后面.
例句;

I am trying hard to reach the button.
我在努力构这个按钮.
They walked slowly.
他们走得很慢.
I enjoy driving slowly in the golden morning sun.
我喜欢在清晨金色的阳光下悠然地驾车.
We saw a boat coming quickly toward us.
我们看到小船很快地朝我们驶来.
肯定否定副词或频率副词多置于一般动词之前,但通常要放在助动词、联系动词BE之后.
You may never reach it.
你也许永远构不到它.
He never spoke about his own merits.
他从不说起他自己的功绩.
We may never see him again.
我们也许再也见不到他.
He is often late for school.
他常上学迟到.
2.修饰形容词的副词通常放在该形容词的前面.
l例句：

You're too short.
你太矮了.
This is a very funny film.
这是一部非常有趣的电影.
This room is fairly small.
这个房间相当小.
副词可以修饰形容词的比较级或最高级.
You are much taller than I am.
你比我高多了.
I feel much better today.
我今天感觉好多了.
The piece of cake I got was almost the largest.
我得到的蛋糕差不多是最大的一块.
3.副词在修饰其他副词时,置于被修饰副词之前.

例句：
You must run very fast.
你一定跑得很快吧.
He drives extremely fast.
他车开得非常快.
Do it right now.
马上就做.
副词修饰其他副词的比较级或最高级.
He runs much faster than I.
他跑得比我快多了.
This cake ought to be good,because I used the very best of all cream.
这个蛋糕应该很好,因为我用了奶油中最好的.
4.少数副词可以修饰名词及名词同等语,通常放在被修饰名词的前面

例句：
also,very,even,just,only,not,nearly,especially,exactly,simply,rather,quite等.
Even a girl can do it.Only you can't.
甚至女孩儿也能做到.就是你不行.
Even a child can do it.
甚至小孩也能做到.
Only she could come.
只有她能来.
5.副词修饰基数词时,一般置于被修饰的数词之前
I see you standing there almost one hour.
我看见你站在那儿整整一小时了.
They are going to stay here fully six months.
他们将要在这里停留整六个月.
This car cost me over ten thousand dollars.
这辆车花掉了我一万多美元.
当副词修饰序数词时,序数词的前面应有一个限定词.
We counted approximately the first thousand votes.
我们数了大约首批千张选票.