2019年高考英語二輪專題復習2代詞和數(shù)詞
9.65表示為nine point six five。218.39表示為two hundred and eighteen point three nine。
注意:小數(shù)點讀point,“零”讀字母o的音或zero,小數(shù)點前就按基數(shù)詞去讀,小數(shù)點后的數(shù)字按個位基數(shù)詞依次讀出。
62.62讀作sixty-two zero point six two
iv.數(shù)詞的其它表達式
1.序號的表示法
①單純的序號,可在基數(shù)詞前加number,簡寫為no.。
no.1第一號
②事物名詞的序號表達法有什所不同:
對于一些小序號可有序數(shù)詞也可用基數(shù)詞表達,形式分別為:the +序數(shù)詞 + 名詞;名詞 + 基數(shù)詞
第一次世界大戰(zhàn)可以表示為the first world war或world war i。
對于一些大序號我們通常只用一種表達法,即名詞 + 數(shù)詞
501號房間表示為room 501
538路公共汽車表示為bus 538
可用a/the + number + 基數(shù)詞 + 名詞
a no.5 bus一輛五路公共汽車
the no.8 bus那輛8路公共汽車
2.倍數(shù)的表達方式
一般情況下我們用以下三種倍數(shù)表達方式:
①倍數(shù)用在as+形容詞/副詞(原級)+名詞+ as結構之前
they have three times as many cows as we do.
他們擁有的奶牛是我們的三倍多。
②倍數(shù)放在形容詞或副詞的比較級之前或by + 倍數(shù)用在比較級之后
this rope is four times longer than that one.
they produced more products in than those in by twice.
XX年的產(chǎn)品是XX年的兩倍
③倍數(shù)用在表示度量名詞前,其基本結構為:倍數(shù) + the + size / length / weight …+ of + 表示比較對象的名詞,也可用于倍數(shù) + what引導的從句中
this room is three times the size of that one.
the college is twice what it was 5 years ago.這個學院是5年前的兩倍。
you can’t imagine that rats eat 40 to 50 times their weight.
3.大約數(shù)的表示法
①用ten、dozen、score、hundred、thousand、million等數(shù)詞的復數(shù)后加of短語來表示幾十、幾百、上千、成千上萬等大約數(shù)概念
the little boy buys dozens of pencils every term.數(shù)打鉛筆
thousands of people died in the earthquake.數(shù)千人
every year tens of thousands of people go to work in guangdong province.
②用less than、under、below、almost、nearly、up to等來表示小于或接近某數(shù)目
he is good at english, so he can finish the paper in less than two hours.不到兩個小時
③用more than、over、above、beyond、or more等來表示超過或多于某個數(shù)目
peking university has a history of more than 100 years.有100多年的歷史
④用or、or so、about、around、some、more or less等表示在某一數(shù)目左右
about 50 people were present at that time.
⑤用to、from … to…、between … and表示介于兩數(shù)詞
his salary rises from 20 dollars a week to 35 dollars a week.從每周20美元漲到每周35美元
注意:dozen、score、hundred、thousand、million作數(shù)詞表示確切數(shù)量時,不用復數(shù)
three score, five dozen, seven million等。
4.鐘點、日期、年齡的表達式
①鐘點
正讀法10:20:ten twenty
倒讀法9:30:half past nine(九點半)
7:05:five past seven(七點過五分)
8:50:ten to nine (八點五十;差十分是九點)
表示整點8:00:eight o'clock (sharp)