数词复习课件2021-2022学年沪教牛津版八年级上册英语

Grammar 数词 In the 19th century, there was a jewelry shop owner. Mr. Green was very kind and rich. But unfortunately, he was killed in his shop last night. He was just in his forties. When the police arrived, the killer has gone and nothing was left except a few numbers. It is “ 550971051”. Here are three suspects for you, and try you best to find out who the killer is. Story time His wife Mrs. Green His brother Gary Green His neighbor oil shop owner Who is killer? killer 【定义】 Numerals 数词 【基数词】 【序数词】 【用法】 定义 表示数目和顺序的词叫数词，数词可分为基数词和序数词两类。 1）1－12, 独立成词。 one two three four five six seven eight nine ten eleven twelve 2）13--19, 由3－9 + teen构成。 14–fourteen 特殊拼写: 13– thirteen 15--fifteen 18—eighteen 3）20－90, 以-ty结尾。 60---sixty 特殊拼写:20—twenty 30---thirty 40—forty 50—fifty 80---eighty 4）21－99 (两位数) 十位与个位之间有 “－”。 21 twenty—one 55 fifty—five 99 ninety—nine 5）百—hundred 千—thousand 百万—million 十亿—billion 6）101－999, 三位数, 百位与十位/个位之间加and, 十位和个位用“-”连接