一次性講明“確定頻率副詞,不確定頻率副詞和頻率副詞”在句中的位置。
日期:2022-01-18 13:11 點(diǎn)擊:
在副詞中,有一類副詞常用于描述我們?cè)谝欢螘r(shí)間內(nèi)開展活動(dòng)或做事的次數(shù),這類副詞我們稱之為頻率副詞,常見的有always,often,usually等等。
大家在日常使用中并未注意到它們的差別和用法,其實(shí)這類詞匯的用法也有大學(xué)問。
不確定頻率副詞
在沒有準(zhǔn)確數(shù)據(jù)來衡量頻率時(shí),我們常用到下面這些不確定的頻率副詞,這些頻率副詞描述的頻率排序從高到低,可見下表。
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.
|
這些頻率副詞中,seldom,hardly ever,rarely,never都有否定的意思。
除以上這些常用頻率副詞外,還有下面幾個(gè)長(zhǎng)詞組型的頻率副詞,意為“有時(shí)”:
once in a while
every now and then
from time to time
確定頻率副詞
當(dāng)我們有確定數(shù)字的頻率時(shí),如兩周一次、每天,這類頻率副詞描述的頻率是確定的。常見的確定頻率副詞有以下幾種構(gòu)成方法:
1. Number + Times + A + Time Period(單數(shù)形式)
如:once a day(表示一次時(shí)不能使用one time,而應(yīng)使用once)
twice a week(表示兩次時(shí)不能使用two time,而應(yīng)使用twice)
three times a month(表示三次及以上時(shí),使用“數(shù)字+times”的形式)
2. Every + Time Period(單數(shù)形式) = Frequency adv
如:every day = daily
every week = weekly
every month = monthly
every year = annually
3. Every + Number + Time Period(復(fù)數(shù)形式)
如:every two days
every three weeks
every four years
頻率副詞在句中的位置
在使用頻率副詞時(shí),其在句中的位置有約定俗成的規(guī)律,具體如下:
1. 主語(yǔ)+頻率副詞+實(shí)意動(dòng)詞
如:I always do my homework after school.
2. 主語(yǔ)+be動(dòng)詞+頻率副詞
如:He isn’t usually so generous.
3. 主語(yǔ)+情態(tài)動(dòng)詞+頻率副詞+實(shí)意動(dòng)詞或be動(dòng)詞
如:I would never be unkind to others.
4. 可用于句首的頻率副詞:Usually, normally, often, frequently, sometimes, occasionally
不可用于句首的頻率副詞:Always, seldom, rarely, hardly, ever, never
如:Normally, he should arrive here on time.
當(dāng)頻率副詞放于句首時(shí),一般有強(qiáng)調(diào)的意味。