1、,模块四 数词,教师点拨,教师点拨,考点精讲 1 基数词,一、基数词表示数量,后面一般接复数名词(“一”除外)。如:seven days 二、基数词的读法: 从右向左看,每隔三位划一逗号,倒数第一个逗号之前要用thousand,倒数第二个逗号之前要用million,倒数第三的逗号之前要用billion表示。 如:7,258,366,200 可读为:seven billion, two hundred and fiftyeight million, three hundred and sixtysix thousand, two hundred 百位与十位之间要加and。如:one hundre
2、d and twentyfive;十位与个位之间要加连词符。如:seventyfour,三、hundred, thousand, million, billion, dozen前面有具体数字时,后面不加s 和of;如果没有具体数字或者是不确定的数字(many, a few, several等),后面必须加s 和of,表示约数。如:five hundred(五百), hundreds of(成百上千的),ten thousand(一万),thousands of(成千上万的),millions of(上百万的),many thousands of(上万),several dozens of(好几
3、打),教师点拨,四、时间的读法 顺读法:点钟分钟 如:2:05 two o five 3:50 three fifty 逆读法: 分钟 30, 用past:分钟past点钟 (几点过几分) 如:4:15 fifteen past foura quarter past four 6:30 half past sixthirty past six 分钟30分钟,用to:分钟(60分钟数)to(点钟1)(几点差几分,过几分到几点) 如:7:40 twenty to eight 8:45 a quarter to ninefifteen to nine 整点的表达:点钟(oclock)。 如:9:00
4、 nine(oclock),教师点拨,五、编号的表达 名词基数词the序数词名词(注意大小写) 如:Lesson Onethe first lesson Page 4the fourth page 六、小数点用point;百分数用percent。如:1.4 one point four;60% sixty percent 大于1的小数看作复数,小于1的看作单数。如:0.8 meter,1.2 meters。 七、与表示度量衡单位的词连用。如:ten meters deep, 6,300 kilometers long, 100 meters wide,1.8 meters tall, 10 y
5、ears old, 20 kilometers away, far away等。 注意:不能说20 kilometers far away。,教师点拨,教师点拨,考点精讲 2 序数词,一、序数词表示顺序,前面一般有the或物主代词修饰,后面一般接单数名词。 如:Monday is the second day of the week. Today is his seventeenth birthday. 注意:“a/an序数词”表示“又一, 再一”,表示泛指。 I have failed twice, but I want to try a third time. Many couples i
6、n China are allowed to have a second child these years.,二、分数的表达:分子用基数词,分母用序数词,分子大于1时,分母s。 如:1/3 one third; 3/4 three fourths/three quarters 百分数:20% twenty percent 80% eighty percent 注意:分数修饰名词时,其谓语动词与名词保持一致。 Three quarters of the water here is clean. 70% of the earth is covered by water. One fifth of
7、 the apples have gone bad. 三、日期的表达:月日年,日月年 如:January the second, 1990January 2, 1990the second of January, 1990,教师点拨,教师点拨,考点精讲 3 其他重点表达,半小时 half an hour/a half hour 半天 half a day/a half day 两天半 two and a half daystwo days and a half 一个半月 one and a half monthsone month and a half1.5 months 一至两天 one o
8、r two daysone day or two 在某人岁时 at the age of基数词 在20世纪90年代/在一九九几年 in the 1990s 在他30多岁时 in his thirties,再多两天 two more daysanother two days 还要三个男孩子three more boysanother three boys 世界上第二大国家 the second largest country in the world 中国第三大河流 the third longest river in China 数字修饰名词:a sevenday holiday, an 80yearold woman, a 100meterwide river, a twohour walk,教师点拨,