2016高考题复习-数词.ppt

高考英语语法复习： 数词 Yoyo; ;1. — If a = 4, b = 5, what’s the answer to the question “a + 2ab + 1=?” — _____. A. Forty-fifth B. Forty-five C. Twenty-three D. One hundred and twenty-one;2. — There are 60 students in my class and 44 of them use weibo very often. — 44? That means about _____ of your classmates are weibo users, right? A. half B. one third C. two thirds D. three quarters 【解析】表达分数时，分子用基数词，分母用序数词；分子大于1时，分母要在序数词后面加-s。在表达四分之几时，要用quarter与基数词搭配来表示(如：四分之三 three quarters)。表达二分之一时通常用one half或a half表示。;3. There are over _____ students in their school. A. hundreds B. nine hundreds C. hundreds of D. nine hundred 【解析】当基数词与hundred, thousand, million, billion连用，表示具体的“几百、几千、几百万、几十亿”时，这些词后不加-s。如：two hundred books, three thousand trees, four million people, five billion seconds。;4. After the Asian Games, _____ people came to Guangzhou for a visit during holidays. A. thousand B. thousands of C. five thousands D. thousand of 【解析】 当hundred, thousand, million, billion后面加-s并与of 连用时，意为“数以……计的”，表达的是约数的概念，前面不能再加具体的数字。;基数词的构成 ①1－12,独立成词。 one two three four five six seven eight nine ten eleven twelve ②13-19,由3－9 + teen构成。 14–fourteen 16–sixteen 17–seventeen 19–nineteen 特殊拼写: 13– thirteen 15–fifteen 18–eighteen;③20－90,以-ty结尾。 20—twenty 30 —thirty 40—forty 50—fifty 60 —sixty 70 —seventy 80 —eighty 90—ninety ④21－99,两位数,十位与个位之间“－”。 21 twenty—one 55 fifty—five 99 ninety—nine;⑤ 101—999，三位数，百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three ⑥ 1，000以上数目,从??向左每三位用“，” 分开,分别读为thousand , million, billion 。;基数词的用法 ① 表示具体数目,hundred, thousand, million不用