频率副词的用法和位置简介
频率副词是表示动作或状态发生的频率的词,如always, often, sometimes, never等。频率副词在句中的位置有一定的规律,一般来说,它们放在实义动词之前,be动词之后,情态动词或助动词之间。但是,有些频率副词可以放在句首,有些则不可以。
一、频率副词的种类
根据频率副词表示的频率的高低,可以将它们分为以下几类:
表示100%频率的副词,如always, constantly, invariably等,意为“总是,一直”。
表示80%-90%频率的副词,如usually, normally, generally, regularly等,意为“通常,一般”。
表示60%-70%频率的副词,如often, frequently等,意为“经常,频繁”。
表示40%-50%频率的副词,如as often as not, half the time等,意为“一半时间,有时”。
表示20%-30%频率的副词,如sometimes, occasionally, at times等,意为“有时,偶尔”。
表示10%以下频率的副词,如rarely, seldom, hardly ever等,意为“很少,几乎不”。
表示0%频率的副词,如never, not ever等,意为“从不,永不”。
除了这些常用的频率副词外,还有一些词组或短语也可以表示频率,如:
once in a while, every now and then, from time to time等,意为“不时,偶尔”。
every day, every week, every month等,意为“每天,每周,每月”。
once a day, twice a week, three times a month等,意为“一天一次,一周两次,一个月三次”。
副词的位置二、频率副词的用法和位置
频率副词在句中的位置有一定的规律,一般来说,它们放在实义动词之前,be动词之后,情态动词或助动词之间。具体如下:
主语+频率副词+实义动词,如:
I always do my homework after school. 我总是放学后做作业。
She often reads books in the library. 她经常在图书馆看书。
They rarely watch TV at night. 他们晚上很少看电视。
主语+be动词+频率副词,如:
He is usually late for class. 他通常上课迟到。
She is never angry with me. 她从不对我生气。
They are sometimes bored at home. 他们有时在家无聊。
主语+情态动词或助动词+频率副词+实义动词或be动词,如:
He can always solve the problem. 他总是能解决问题。
She has never been to Paris. 她从未去过巴黎。
They will occasionally visit their grandparents. 他们偶尔会去看望他们的祖父母。
但是,有些频率副词可以放在句首,有些则不可以。一般来说,可以放在句首的频率副词有:
usually, normally, often, frequently, sometimes, occasionally等,意为“通常,经常,有时,偶尔”。
放在句首时,这些频率副词有强调的意味,句子的语气也会变得更正式。如:
Usually, he gets up at six o'clock. 他通常六点起床。
Sometimes, I wonder what he is thinking. 有时,我想知道他在想什么。
Occasionally, she plays the piano for us. 偶尔,她为我们弹钢琴。
不可以放在句首的频率副词有:
always, seldom, rarely, hardly ever, never等,意为“总是,很少,从不”。
这些频率副词不能放在句首,否则会造成语法错误或语义混乱。如:
Always, he is late for class. (错误)
He is always late for class. (正确)
Never, I have seen such a beautiful sunset. (错误)
I have never seen such a beautiful sunset. (正确)
三、频率副词的练习
下面是一些关于频率副词的练习,你可以尝试完成它们,并检查你的答案。
1. 选择题
从每题的四个选项中,选择一个最合适的频率副词填入空格。
1. She ___ goes to the cinema on weekends. (A) always (B) never (C) sometimes (D) rarely
2. He ___ drinks coffee in the morning. (A) usually (B) seldom (C) occasionally (D) frequently
3. They ___ travel abroad for business. (A) often (B) hardly ever (C) always (D) from time to time
4. She ___ forgets her keys. (A) never (B) sometimes (C) frequently (D) as often as not
5. He ___ plays chess with his friends. (A) once in a while (B) every day (C) twice a week (D) three times a month 答案
1. C
2. A
3. A
4. A
5. D
2. 填空题
根据句意,用括号中的频率副词填入空格,并注意其在句中的位置。
1. He ___ (always) helps me with my homework.
2. She is ___ (never) satisfied with her work.
3. They can ___ (sometimes) be very noisy.
4. He has ___ (hardly ever) seen a snowman.
5. ___ (Occasionally), she writes a letter to her parents.
答案
1. always
2. never
3. sometimes
4. hardly ever
5. Occasionally
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