高中英語的冠詞的基本用法介紹(2)
高中英語的冠詞的基本用法介紹
高中英語的數(shù)詞的基本用法
1基數(shù)詞
1. 基數(shù)詞寫法和讀法: 345 three hundred and forty-five。英語中沒有“萬”這個讀數(shù)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(shù)詞單位的 hundred, thousand, million, billion 通常不帶復數(shù)詞尾-s,但若用于表示數(shù)百、數(shù)千、數(shù)百萬這樣的泛指,則用復數(shù)。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(shù)詞用復數(shù)形式可以表示人的大約歲數(shù)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(fā)生在20世紀30年代。
4.基數(shù)詞一般是單數(shù)形式,但下列情況,常用復數(shù):
a. 與of 短語連用,表示概數(shù),不能與具體數(shù)目連 用,如scores of people 指許多人;
b.在一些表示"一排"或"一組"的詞組里;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(shù)詞復數(shù);如in the 1980s
e. 在乘法運算的一種表示法里,如:3 x 5 = 15 Three fives is (are) fifteen.
2序數(shù)詞
序數(shù)詞的縮寫形式: first---1st second---2nd thirty-first---31st
3數(shù)詞的用法
1)倍數(shù)表示法
a. 主語+謂語+倍數(shù)(或分數(shù))+ as + adj. + as
I have three times as many as you.
b. 主語+謂語+倍數(shù)(分數(shù))+ the size (amount,length…) of…
The earth is 49 times the size of the moon.
c. 主語+謂語+倍數(shù)(分數(shù))+ 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(shù),表示增加多少倍
The production of grain has been increased by four times this year.
2)分數(shù)表示法
構(gòu)成口訣:分子基數(shù)詞,分母序數(shù)詞。分子大于1,分母加-s:
1/3 one-third ; 3/37 three and three-sevenths
4常見考法
1. 序數(shù)詞的不規(guī)則變法;2. 大概數(shù)的表達方法;3. 倍數(shù)的表達方法
5誤區(qū)提醒
1.對基數(shù)詞的形式掌握不清;2.對概數(shù)的表達詞組掌握不清;3.倍數(shù)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(shù)量單位前有具體數(shù)字時不要用復數(shù),表概數(shù)時其后加s且后加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(shù)的表達方法不再贅述,見上面講解。正確答案D。
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