1、Made by Qianmo-studioMade by Qianmo-studio语法复习04 数词Qianmo-studioQianmo-studio考点思维导图Qianmo-studioQianmo-studio考点速查1.基数词的基本形式（1）112独立成词,需逐个记忆。（2）1319的基数词以-teen结尾。尤其要注意thirteen,fifteen,eighteen的正确拼写。（3）表示“整十”的基数词（2090）都以-ty结尾。其中要特别注意twenty,thirty,forty,fifty,eighty,ninety的正确拼写。（4）hundred,thousand,milli
2、on,billion等词前有具体数字时,不能加-s,也不与of连用;无具体数字时,要加-s,且与of连用。考点一 基数词Qianmo-studioQianmo-studio考点速查2.基数词的其他表达形式（1）2199的写法是在十位和个位中间加连字符“-”。36thirty-six97ninety-seven（2）101999的构成是百位和十位之间（若十位为零,则在百位和个位之间）用and连接。601six hundred and one755seven hundred and fifty-fiveQianmo-studioQianmo-studio考点速查（3）四位数或者四位数以上的基数词的
3、拼写规律:从右往左每三位加一个逗号,第一个逗号读作thousand（千）,第二个逗号读作million（百万）,第三个逗号读作billion（十亿）。94,295ninety-four thousand two hundred and ninety-five（4）“基数词-单数名词”相当于复合形容词,只能作定语,用于表示时间、距离等。a ten-minute walk 步行10分钟的路程（5）“基数词+more”与“another+基数词”意义相同,表示“再;另外”。two more days=another two days 另外两天Qianmo-studioQianmo-studio考点速
4、查1.基数词变序数词的规则考点二 序数词基数词变化规则例词1,2,3不规则变化onefirsttwosecondthreethird419基数词词尾加-th一般:fourfourthnineteennineteenth特殊:fivefiftheighteighthnineninthtwelvetwelfth 2090整十数 ty变为tie再加-thtwentytwentieth ninetyninetieth除整十数外的两位数或多位数变个位数twenty-onetwenty-firstone hundred and fifty-fiveone hundred and fifty-fifth【注
5、意】序数词的缩写:first1stsecond2ndthird3rdfourth4thninth9thtwenty-first21stQianmo-studioQianmo-studio2.序数词的用法（1）序数词前加定冠词the,表示第几;但序数词前有其他修饰词时,the省略。This is my first time to come to China.这是我第一次来中国。Jimmys mother took him to visit the Great Wall on his ninth birthday.吉米的妈妈在他九岁生日时带他参观了长城。（2）序数词前加不定冠词a/an,表示“又一
6、;再一”。Weve tried it three times.Must we try it a fourth time?我们已经试过三次了。还必须再试一次吗?考点速查Qianmo-studioQianmo-studio考点速查1.数词的常见用法考点三 数词的用法Qianmo-studioQianmo-studio2.数词的其他用法（1）概数词的用法表示确切的数字:具体数字+概数词+名词复数 five hundred/thousand people 500/5000人表示不确切的数字:概数词+-s+of+名词复数thousands of birds 成千上万只鸟考点速查Qianmo-studioQianmo-studio（2）带有分数/百分数的词语作句子主语时,谓语动词的单、复数形式要由其后名词的数决定。Two thirds of the students in our school have raised money for the disabled.我们学校三分之二的学生为残疾人筹了钱。About three quarters of the earths surface is covered by water.约四分之三的地球表面被水覆盖。考点速查
