高中英語數詞的基本用法
數詞是表示數目多少或順序多少的詞,在英語的學習中數詞的基本的用法大家瞭解嗎?下面是小編給大家帶來的有關於數次的基本用法的介紹,希望能夠幫助到大家。
的介紹
1基數詞
1. 基數詞寫法和讀法: 345 three hundred and forty-five。英語中沒有“萬”這個讀數單位,要表示漢語中的“萬”,英語需借用thousand一詞,如“一萬”用“十個千”表示***ten thousand***,“十萬”用“一百個千”表示***one hundred thousand***。
2. 用作基數詞單位的 hundred, thousand, million, billion 通常不帶複數詞尾-s,但若用於表示數百、數千、數百萬這樣的泛指,則用複數。如:
About two thousand people died in the earthquake. 大約有兩千人在地震中喪生。
Thousands of people go to the seaside every year. 每年成千上萬的人到海濱去。
3. 表示整十的基數詞用複數形式可以表示人的大約歲數或年代。如:
He is in his early twenties. 他才二十出頭。
This took place in the 1930s. 這事發生在20世紀30年代。
4.基數詞一般是單數形式,但下列情況,常用複數:
a. 與of 短語連用,表示概數,不能與具體數目連 用,如scores of people 指許多人;
b.在一些表示"一排"或"一組"的詞組裡;如:They arrived in twos and threes.
c. 表示"幾十歲",如 in his thirties
d. 表示"年代",用 in +the +數詞複數;如in the 1980s
e. 在乘法運算的一種表示法裡,如:3 x 5 = 15 Three fives is ***are*** fifteen.
2序數詞
序數詞的縮寫形式: first---1st second---2nd thirty-first---31st
3數詞的用法
1***倍數表示法
a. 主語+謂語+倍數***或分數***+ as + adj. + as
I have three times as many as you.
b. 主語+謂語+倍數***分數***+ the size ***amount,length…*** of…
The earth is 49 times the size of the moon.
c. 主語+謂語+倍數***分數***+ 形容詞***副詞***比較級+ than…
The grain output is 8 percent higher this year than that of last year.
d. 還可以用by+倍數,表示增加多少倍
The production of grain has been increased by four times this year.
2***分數表示法
構成口訣:分子基數詞,分母序數詞。分子大於1,分母加-s:
1/3 one-third ; 3/37 three and three-sevenths
4常見考法
1. 序數詞的不規則變法;2. 大概數的表達方法;3. 倍數的表達方法
5誤區提醒
1.對基數詞的形式掌握不清;2.對概數的表達片語掌握不清;3.倍數的表達行形式混淆不清。
典型例題
1.The tsunami killed ____ people in south and southeast Asia.
A.ten thousands B. ten thousands of
C. tens of thousand D. tens of thousands of
解析:錯選B。當hundred, thousand, million, billon 等數量單位前有具體數字時不要用複數,表概數時其後加s且後加of。因此“幾十萬”的表達應為“tens of thousands of”,正確答案C。
2.At a rough estimate,Nigeriais ___Great Britain.
A. three times the size as B. the size three times of
C. three times as the size of D. three times the size of
解析:錯選A。倍數的表達方法不再贅述,見上面講解。正確答案D。
高中英語冠詞的語法作用
1常見考法
1.形容詞的辨析;
2.複合形容詞的構成;
3.形容詞的句法功能;
4.多個形容詞定語的排序;
5.形容詞的比較等級。
形容詞和副詞
1.“as+形容詞+***a/an***+名詞+as”表示同級比較,注意中間的形容詞和名詞並列時各自所在的位置。
It is generally believed that teaching is as much an art as it is a science.
人們普遍認為,教學是一門科學,同時也是一門藝術。
2.“as+形容詞/副詞的原級+as”與“not as/so+形容詞/副詞的原級+as”表示同級比較,即兩個或兩部分人或物在性質上或程度上相同***不同***。
The work is not as/so difficult as you imagine.
這項工作不是像你想像的那麼難。
3.“the+比較級+of the two +名詞”表示“兩者中較……的那個”。
The taller of the two boys is my brother.
兩個男孩中較高的那位是我哥哥。
4.a+形容詞比較級+n.……
After two years’ research,we have a far better understanding of the disease.
研究兩年之後,現在我們對這種病有更好的理解。
We went to the USA in search of a better life.
為了尋找更美好的生活我們去了美國。
5.比較級的修飾語常見的有:rather,much,still,even,far,any***用於否定句或疑問句***,a lot,a little,a great deal,by far,a bit 等。
The students study even harder than before.
學生們學習比以前更努力了。
A car runs a great deal faster than a bike.
汽車比自行車跑得快得多。
6.最高階
***1***最高階的修飾語常見的有:序數詞,by far,nearly,almost,by no means,not really,not quite,nothing like。
The bridge being built now is by far the longest across the Yellow River.
目前正在建的那座橋是橫跨黃河之上的橋當中最長的橋。
I’d like to buy the second most expensive camera.
我想買僅次於最貴的照相機。
***2***否定詞+比較級=最高階。
There is no greater love than that of a man who lays down his life for his friends.
為朋友而放棄生命的人的愛是最偉大的愛。
—Are you satisfied with what he said at the meeting?
——你對他在會議上說的滿意嗎?
—No.It couldn’t have been worse.
——不,不能再差了。
7.表示倍數的句型:
***1***A is+倍數+比較級+than+B
***2***A is+倍數+as+原級+as+B
***3***A is+倍數+the+名詞***size,length,height 等***+of+B
***4***A is+倍數+that+of+B
***5***A is+倍數+what 引導的名詞性從句
①This building is three times higher than that one.
This building is three times as high as that one.
This building is three times the height of that one.
這個建築物是那個建築物的3倍高。
②The output of this year is 3 times that of 2008.
=The output of this year is 3 times what it was in 2008.
今年的產量是2008年的三倍。
③After the new technique was introduced,the factory produced twice as many cars in 2008 as the year before.
自從新技術被引進以後,這家工廠2008年生產的小汽車是上一年的兩倍。
8、形容詞修飾名詞,說明事物或人的性質或特徵。
1***性質形容詞有級的變化,可以用程度副詞修飾,在句中可作定語、表語和補語。例如:hot
2***敘述形容詞只能作表語,所以又稱為表語形容詞。這類形容詞沒有級的變化,也不可用程度副詞修飾。大多數以a開頭的形容詞都屬於這一類。例如:afraid,
afraid,alike,alive,alone,asleep,awake, well,unwell,ill,faint等。
3***形容詞作定語修飾名詞時,要放在名詞的前邊。但是如果形容詞修飾以-thing為字尾的詞語時,要放在這些詞之後,例如:something nice
9、以-ly結尾的形容詞
1*** 大部分形容詞加-ly可構成副詞。但 friendly,deadly,lovely,lonely,likely,lively,ugly,brotherly,仍為形容詞。
2***有些以-ly 結尾既為形容詞,也為副詞。
daily,weekly,monthly,yearly,early
The Times is a daily paper.
The Times is published daily.
10、用形容詞表示類別和整體
1*** 某些形容詞加上定冠詞可以泛指一類人,與謂語動詞的複數連線。如:the dead,the living,the rich,the poor,the blind,the hungry等。
The poor are losing hope.
2*** 有關國家和民族的形容詞加上定冠詞指這個民族的整體,與動詞的複數連用。
the British,the English,the French,the Chinese.
The English have wonderful sense of humor.
多個形容詞修飾名詞的順序
11、多個形容詞修飾名詞時,其順序為:
限定詞+數量詞***序前基後***+性狀形容詞+大小、長短、高低等形體+新舊+顏色+國籍+材料
those + three + beautiful + large + square+ old + brown + wood + table s
2誤區提醒
1.形近、意近詞的混用 2. 形容詞的句法功能用錯 3.複合形容詞的構成不熟悉4.多個形容詞作定語時排序不清 5.形容詞的比較等級用錯
【典型例題】:
1*** One day they crossed the ____bridge behind the palace.
A. old Chinese stone B. Chinese old stone
C. old stone Chinese D. Chinese stone old
解析:錯選B。 幾個形容詞修飾一個名詞,他們的排列順序是:年齡,形狀,大小+顏色+來源+質地+用途+國家+名詞。正確答案A.
2***It’s a relief for us to know that something _____ is being done to rebuild the schools destroyed in the quake.
A. competitive B. passive C. sensitive D. positive
解析:因形近形容詞分辨不清而錯選其他。根據題意,本句話表達“我們瞭解到,為了重建在地震中被破壞的學校,正在採取一些積極的措施”。空處應填“積極的”,正確答案為D。
3***--- Our women athletes achieved great success in the Vancouver Olympic Winter Games.
--- Yes. No one could have a_____ performance,I think.
A.well B. better C. best D. the best
解析:因形容詞比較等級用法沒掌握好而錯選C. 此處應用比較級表最高階意思。正確答案為B。