程度副词:
用于表示程度.
常见的有：
fairly, pretty, rather, quite, very, much, too, greatly, almost, nearly, half, highly, awfully, deeply, partly, perfectly, really 等。 
eg: I quite agree with you.

     程度副词用于表示程度，常见的有fairly, pretty, rather, quite, very, much, too, greatly,
almost, nearly, half, highly, awfully, deeply, partly, perfectly, really 等。
     I quite agree with you.

程度副词的用法：
1.程度副词表示动词，形容词或其他副词的程度，如：
too(太)，very(非常)，much(很)，almost(几乎)，nearly(几乎)，enough(充分)，hardly(几乎不)等。
2.程度副词用在一般动词前。
I almost forgot to bring my key.
我差点忘记带钥匙。
3.程度副词用在助动词与一般动词之间。
I could hardly believe it.
我几乎不能相信它。
4.程度副词用在形容词或副词前，enough除外。
He drives very carefully.
他驾驶很小心。
He is old enough to go to school.
他够年龄，可以上学了。
5.程度副词much(…得多)，even(更加)可在形容词或副词的比较级之前作修饰语。
This question is much more difficult than that one.
这个问题比那个问题难多了。
Canada is even larger than the United States.
加拿大甚至比美国还大。

程度副词和强调副词：
1、程度副词可修饰动词，表示“到某种程度”：
He loved his mother dearly.  他深爱他的母亲。
I strongly object to your saying that.  我强烈反对你这样说话。
Is she badly hurt?  她伤得重吗？
这类副词除修饰动词外，还可修饰形容词（a）或另一副词(b):
a. fairly simple 相当简单
awfully sorry 非常抱歉
quite correct 完全正确
truly grateful 确实很感激
b. fairly smoothly 相当顺利地
wonderfully well 好极了
know fully well 完全清楚
do it very quickly 干得很快

2、强调副词和程度副词很接近，有些就是程度副词。它们主要是对所修饰的动词(a)、形容词（b）加以强调：
a. I quite agree. 我完全同意。
He knew absolutely nothing. 他是毫无所知的。
Your attitude simply amazes me. 你的态度简直使我吃惊。
b. You’re entirely wrong. 你完全错了。
She’s perfectly correct. 她完全正确。
The food is just wonderful. 这饭菜简直好极了。
3）much 是一个特殊的程度副词，它可以：
a. 修饰副词（特别是用在否定句中）：
She didn’t talk much. 她不怎么说话。
I don’t much like the idea.  我不大喜欢这个想法。
Thank you very much. 非常感谢你。
b. 修饰形容词等；
I’m not much good at singing. 我唱歌不太好。
I’m very much afraid that she won’t come. 我很担心她不来。
c. 和形容词或副词的比较级或最高级连用：
You sing much better than me. 你比我唱的好多了。
Their house is much nicer than ours. 他们的房子比我们的好多了。
d. 和how, so , too等词连用：
How much do you like him?  你喜欢他到什么程度？
He would so much like to go.  他会很想去的。

程度副词的用法注意点：
(1) 程度副词主要用于修饰形容词和副词,有的还可修饰比较级(如much, rather 等)和最高级(如quite, much, almost 等)。如:
Houses are much more expensive these days. 如今的房价贵多了。
This is quite [much] the most expensive radio here. 这是这里最贵的收音机。
【说明】quite 有时也修饰比较级,但只用于quite better(身体康复)这一表达。
(2) 有的程度副词(如quite, rather, almost等)可修饰动词,但有的(如fairly, pretty, very等)则不能修饰动词。如:
I quite agree with you. 我完全同意你的意见。(不用fairly, pretty, very)
We rather like the film. 我们很喜欢这部电影。(不用fairly, pretty, very)
(3) 个别的程度副词(主要是quite和rather)还可修饰名词(注意词序)。如:
It’s quite [rather] a good idea. / It’s a quite [rather] good idea. 那可真是个好主意。
若此结构中没有形容词,则 quite 和 rather 则只能放在冠词之前。如:
It was quite [rather] a success. 那事相当成功。