中考总复习-语法-数词第一课时.doc
中考总复习-语法-数词 第一课时一 中考要求 1掌握基数词和序数词的形式和根本用法。 2熟练掌握时间及日期的根本表达方法。 3掌握日常交际活动中的数词 常见用法。 4理解数次的某些特殊用法。如:hundreds of .二 知识点讲解。 1数词就是表示事物的数量和顺序的词,分为_和_。 2基数词的形式: 1从112分别由从one到twelve12个各不相同的词表示。 2从1319均以后缀-teen结尾。 3从2090的整十数词均以后缀-ty结尾。表示“几十几时,个位和十位之间需加连字符,如twenty-one, thirty-two, forty-three等。 4数字的写法和读法:十位与个位之间要加连字符“-;百位和十位之间要加and; 三位数以上的数,从个位往前数,每三位数加一个逗号“,从后往前数的第一个逗号代表thousand,第二个逗号代表million,第三个逗号是billion,注意这几个词不能用复数形式,后也不能加and。 练习: 写出以下数字的英文形式并朗诵。数字英文数字英文数字英文113702148031590416100517586187971936582060009307000010409000000115012603基数词的根本用法。1表示具体、准确的数目时,hundred, thousand, million等数词后不能加-s, 如five hundred, six thousand,等。当hundred, thousand等数词与of连用,表示不具体、不准确的数目时,词尾须加-s。如:thousands of students, millions of trees. 2对事物的编号用基数词,门牌号,房间号,页码, 号码等通常用基数词。 Turn to page twenty-one. He lives in Room 801.3) 表示百分数用基数词。 Thirty percent of tem is water.4) 表示分数时, 分子为基数次, 分母为序数词, 假设分子大于1, 分母上的序数词要用复数。 one third two fifths三 课上练习: 单项选择( )1 . They also wrote_of beautiful pieces of music for the orchestra.A. hundred B. six hundredC. a hundred D. hundreds( )2.How many people will come to Beijing next year?Its hard to say, _ people, I think.A. million of B. millions of C. three millions D. three millions of ( )3. It is said that the gravity(引力) on Mars is only about _ of the gravity on earth.A. threeeighths B. thirdeighthC. threeeights D. thirdeight( )4. - How many students are there in your school, Mike?- There are over students in our school. A. two thousands B. two thousands of C. two thousand D. two thousand of ( )5.There are months in a year. A. twelve B. twelf C. twelveth D. twelfth( 6. There are students in our school.A. four hundred twenty B. four hundred and twentyC. four hundreds twenty D. four hundreds and twenty