英语中频度副词 often，always，usually 等在句中的位置是：行为动词之前，连系动词之后。同学们容易混淆。只要记住“行前系后”就不会忘了。如：
1．We often play volleyball after class．She is often late for school．
2．He always goes to work early．He iS always kind to others．
3．Our teacher usually comes to school at seven．Our teacher is usually free on Sunday．
一、频度副词的用法
频度副词就是表示动作发生频率（次数）的副词。常见频度副词有：
never 从不 rarely 很少 seldom 不常
often 经常 frequently 常常 usually 通常
always 总是
请看看下面的例句，注意体会频度副词在句中的含义：
I He rarely left his room. 他很少离开他的房间。
She is always making fun of me. 她老是和我开玩笑。
He never gave me any help. 他从没给我什么帮助。
若要对频度副词提问，我们通常是用疑问副词how often。如：
He seldom goes home. 他很少回家。
→How often does he go home? 他多久回一次家？
二、程度副词的用法
程度副词用于表示程度，常见的有：
almost 几乎 enough 足够 fairly 相当
greatly 十分 hardly 几乎不 much 十分
nearly 几乎 pretty 相当 quite 相当
rather 相当 really 的确 too 太
very 很
读读下面的句子，假若去掉其中的程度副词，看它们在意义有什么变化：
I hardly knew him. 我简直不认识他。
He did not work hard enough. 他不够用功。
I’m rather anxious about him. 我为他相当着急。
We see each other almost every day. 我们几乎天天见面。
程度副词主要用于修饰形容词和副词。有的程度副词(如quite, rather, almost, greatly等)还可修饰动词，但有的(如fairly, pretty, very等)则不能修饰动词。如：
I quite like the idea. 我十分喜欢这个主意。
She rather likes gardening. 她很喜欢园艺。
I greatly appreciate your kindness. 我非常感激你的好心。
你知道如何对程度副词提问吗？要表示到何种程度，可用to what extent。如：
I rather trust them? 我相当信任他们。
→To what extent do you trust them? 你对他们的信任到何种程度?