1、英语语法 English Grammar,Unit 2,Numbers,Study objectives,Warm-up activity,Unit 3 Numbers,Contents,Study objectives,describe the definition of numbersclassify the classes of numbersgrasp the usages of numbers,grasp the usages of Cardinal Numbers;grasp the usages of Ordinal Numbers;grasp the usages of Fra
2、ctional Numbers;,Lets do some warm-up exercises!,Warm-up Activity,Translation,a drop in the ocean沧海一粟 within a stones throw一箭之遥 kill two birds with one stone一箭双雕 A fall into the pit, a gain in your wit.吃一堑，长一智。,Translation,at sixes and sevens乱七八糟 on second thoughts再三考虑 by ones and twos三三两两地，零零落落地,He
3、 had one over the eight after be drank only half bottle of the wine.他才喝了半瓶酒就醉得七歪八倒了。 Two heads are better than one.三个臭皮匠胜过诸葛亮。,Translation,Translation,One mans meat is another mans poison.人各有所好。 Ill love you three score and ten.我会爱你一辈子。 His mark in math is second to none in the class. 他的数学分数在班上名列前茅。
4、,Translation,I always believe my sixth sense.我总相信我的直觉。 He talks about you nine times out of ten when we have a chat.每次我们闲聊他几乎都谈及你。,Task 1.1,The classification of numbers,Contents,1. The classification of numbers 2. Cardinal numbers 3. Ordinal numbers 4. Percentages 5. Fractions 6. Decimals 7. Multip
5、les 8. Additional information 9. Exercises of numbers,Task 1.2,Cardinal Numbers,基数词的构成(一）,基数词的构成（二）,20-100之间各数词要在十位和个位之间加连字符号“-”。22 twenty-two 99 ninety-nine 2. 三位数数词要在百位和十位（若无十位则和个位）之间加and。157 one hundred and fifty-seven 208 two hundred and four 1,000以上的数字，从后面向前数，每三位数加“，”；第1个“，”为thousand，第2个“，”为mil
6、lion。 2,002 two thousand (and) two 38,654 thirty-eight thousand six hundred (and) fifty-four,基数词的用法,1.作定语The nine girls are from Beijing.这九个女孩是北京人。 2.作主语Eight is a good number.8是个好数字。,3.作宾语How many do you want? Five, please. 你要多少？ 五个。4.作表语They are altogether fourteen. 他们一共十四个人。5.作同位语There is a room
7、for you two. 有你们两人的房间。,Task 1.3,Ordinal Numbers,序数词的构成,1. 以与之相应的基数词加词尾-th构成 six sixth fourfourth ten tenth 2. 特殊形式 onefirst twosecond threethird 3. 缩写形式 阿拉伯数字+序数词的最后两个字母。 first1st second2nd third3rd,序数词的用法,1.作主语 The first is his.第一个是他的。2.作宾语Please pass me the third. 请递给我第三个。 3.作定语 The tenth boy is f
8、rom Singapore. 第十个男孩是新加坡人。 注意：序数词作定语时，前面一般要加定冠词 （或物主代词）,Task 1.4,Percentages,百分数,用法:例句作状语 The price of the computer was reduced by 24 per cent.计算机价格降低了24%。 The output of cars in China this year is 48 per cent more than in 2001. 今年中国小汽车产量比2001年上升了48%。,Task 1.5,Fractions,分数词的形式,类别:1. 一般表示法 one fourth
9、two third 2. 其他表示法 two and three fifthsa (one) half a (one) quarter three quarters,分数词的作用,1.作主语A quarter of the students are from England.1/4的学生是英国人。 2.作宾语We will use one fifth of the money for construction. 我们将用1/5的钱来进行建设。 3.作表语My salary is only one third of that of his boss. 我的工资只是他老板的1/3。,4.作定语It
10、s one-twentieth the thickness of a human hair.它相当于人头发丝的1/20（那样粗细）。5.作状语This room is one tenth larger than that one.这个房间比那个房间大1/10。,分数词的作用,Task 1.6,Decimals,小数的读法,例子：6.3 six point three 0.4 zero(或nought) point four 12.386 twelve point three eight six 806.07 eight hundred and six point o seven,小数的用法,作
11、定语： The number of college students is now 2.8 times that of 1998 in our college. 我们大学现在的学生人数是1998年的2.8倍。 Its capacity was 4.3 times as great as that in 1981. 它的生产能力为1981年生产能力的4.3倍。,Task 1.7,Multiples,倍 数,通常用time表示倍数 The earth is 49 times the size of the moon. 地球的大小是月球的49倍。 The output of computers wa
12、s more than 3 times greater. 计算机产量增长了3倍多。 It is 8 times as big as Japan. 它有日本8倍大。,Task 1.8,Additional Information,年份、月份、日期、时刻,1.年份（年份是四位数字时，一般分为两位来读），表示年份用介词in1985年 nineteen eighty-five1990年 nineteen ninety2000年 two thousand2006年 two thousand and / o six,2. 月份（月份的第一个字母要求大写），表示月份用介词in,4. 时刻（通常使用基数词来读），表示时刻用介词at8点 eight oclock / eight9点15分 nine fifteen/ a quarter past nine14点15分 fourteen fifteen上午9点 nine a.m.下午5点25分 five twenty-five p.m.,数学算式和编号表示法,数学算式和编号表示法,
