在学完定语从句之后,同学们会接触到的另一个语法项目是数词。表示数目、多少和顺序先后的词叫数词。数词有两种:表示数目多少的数词叫基数词,如:one,ten twenty-three;表示顺序先后的数词叫序数词,如:first,third,twentieth。
1.基数词
基数词相当于名词,在句中可做主语、表语、定语、状语等。如:
Three of my classmates are from Shanghai.
I am twenty this year.
They have four classes in the morning and three in the afternoon.
2.序数词
1)序数词的构成:
★大多数的序数词是由基数词加-th构成。如:seven―seventh;ten―tenth
★以-t结尾的基数词只在词尾加-h。如:eight―eighth
★以-ve结尾的基数词改-ve为f再加-th。如:five―fifth;twelve―twelfth
★以-y结尾的基数词改-y为-ie再加-th。如:twenty―twentieth,thirty―thirtieth
★几十几的序数词只在个位数体现。如:twenty-one―twenty-first;thirty-three―thirty-third
★特殊的序数词:
one―first;two―second;three―third; nine―ninth
2)序数词在句中同样可做主语、表语、定语、状语等。如:
June the first is Childrens Day.
When did you first meet each other?
She was the last to arrive.
3.数词的用法:
1)表示年、月、日,年用基数词,日用序数词。如:May eleventh,2007
2)表示时间。如: Its eleven twenty.
3)表示编号。编号既可以用基数词表示,也可以用序数词表示。区别是基数词用在名词之后,序数词位于名词之前,并加定冠词。如:Lesson Nine;the Ninth Lesson
4)介词 in ones+整数数词的复数形式,表示年龄。如:
She is in her early forties.(她四十出头。)
5)序数词前加冠词a表示再一次。如:Can I try a second time?
6)在hundred,thousand,million,billion前有数词时为实数意义,它们的词尾不能加复数。前无数词时为虚数意义,hundred,thousand,million,billion可加复数,并可和of连用,构成短语。如:five hundred students;millions of people
相关阅读:
初一英语词汇复习:数词小结(二)
初一英语词汇复习:数词小结(三)
上一篇: 2010年初一英语易错名词试题集锦(4)
下一篇: 初一英语词汇复习:数词小结(二)
星巴克CEO霍华德·舒尔茨毕业演讲:成大事者 当知分享
国际英语资讯:IMF sees small monetary policy effects from Feds balance sheet unwinding
国内英语资讯:Chinese Vice Premier hopes for more cultural exchanges with ASEAN
国际英语资讯:DPRK confirms test firing second ICBM
英国推出折叠房,能移动还能太阳能供电
参议院未能成功废除奥巴马医保法
国内英语资讯:Chinas development not a threat to other countries: FM spokesperson
国际英语资讯:U.S. Senate approves sanctions bill targeting Russia, Iran, DPRK
国内英语资讯:BRICS tax authorities ink institutional document to enhance cooperation
一周热词榜(7.22-28)
你认为自己情商高吗?来看看这12种高情商的表现吧
国际英语资讯:Trump says John Kelly to be new WH chief of staff
国际英语资讯:Russia forced to retaliate for U.S. sanctions while ready to mend ties: FM
国内英语资讯:Top advisory body to convene in late August
A sporting chance
菲尔普斯VS大白鲨,仅以两秒之差落败
川普宣布禁止跨性别者在军中服役
国际英语资讯:Spotlight: Putin clarifies Russia-China military ties, deplores possible U.S. sanctions
国内英语资讯:Xi honors military officers, unit ahead of Army Day
体坛英语资讯:Brazil leaves Maracana out of World Cup qualifiers
全球气温纪录连续三年被打破
体坛英语资讯:China enters last four at Womens Basketball Asian Cup
国际英语资讯:Shallow quake of 5.8 magnitude hits eastern Indonesia
你认为自己情商高吗?来看看这12种高情商的表现吧
乘客太多 空间不够 纽约地铁欲拆座位
国内英语资讯:Xi says closer BRICS cooperation helps build new type of intl relations
国内英语资讯:China Focus: To revive China, Xi holds high banner of socialism with Chinese characteristics
国内英语资讯:Chinese premier meets former WHO chief
国际英语资讯:DPRK fires ballistic missile into east waters: S. Korea
国内英语资讯:China opens wider to boost foreign investment