一次性讲明“确定频率副词,不确定频率副词和频率副词”在句中的位置。
日期:2022-01-18 13:11 点击:
在副词中,有一类副词常用于描述我们在一段时间内开展活动或做事的次数,这类副词我们称之为频率副词,常见的有always,often,usually等等。
大家在日常使用中并未注意到它们的差别和用法,其实这类词汇的用法也有大学问。
不确定频率副词
在没有准确数据来衡量频率时,我们常用到下面这些不确定的频率副词,这些频率副词描述的频率排序从高到低,可见下表。
Frequency
|
Adverb of Frequency
|
Example Sentence
|
100%
|
always
|
I always read book at 10 o’clock.
|
90%
|
usually
|
I usually have bread for breakfast.
|
80%
|
normally / generally
|
I normally go to the gym.
|
70%
|
often / frequently
|
I often surf the internet.
|
50%
|
sometimes
|
I sometimes forget my friends’ birthday.
|
30%
|
occasionally
|
I occasionally eat junk food.
|
10%
|
seldom
|
I seldom run in the park.
|
5%
|
hardly ever / rarely
|
I rarely drink alcohol.
|
0%
|
never
|
I never swim in the sea.
|
这些频率副词中,seldom,hardly ever,rarely,never都有否定的意思。
除以上这些常用频率副词外,还有下面几个长词组型的频率副词,意为“有时”:
once in a while
every now and then
from time to time
确定频率副词
当我们有确定数字的频率时,如两周一次、每天,这类频率副词描述的频率是确定的。常见的确定频率副词有以下几种构成方法:
1. Number + Times + A + Time Period(单数形式)
如:once a day(表示一次时不能使用one time,而应使用once)
twice a week(表示两次时不能使用two time,而应使用twice)
three times a month(表示三次及以上时,使用“数字+times”的形式)
2. Every + Time Period(单数形式) = Frequency adv
如:every day = daily
every week = weekly
every month = monthly
every year = annually
3. Every + Number + Time Period(复数形式)
如:every two days
every three weeks
every four years
频率副词在句中的位置
在使用频率副词时,其在句中的位置有约定俗成的规律,具体如下:
1. 主语+频率副词+实意动词
如:I always do my homework after school.
2. 主语+be动词+频率副词
如:He isn’t usually so generous.
3. 主语+情态动词+频率副词+实意动词或be动词
如:I would never be unkind to others.
4. 可用于句首的频率副词:Usually, normally, often, frequently, sometimes, occasionally
不可用于句首的频率副词:Always, seldom, rarely, hardly, ever, never
如:Normally, he should arrive here on time.
当频率副词放于句首时,一般有强调的意味。