初中英语译林版七年级下册Unit1 语法专项ppt课件 (基数词).ppt

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1、,Unit1语法专项课件（基数词）,初中英语译林版七年级下册,语法透析,考点大观易错辨析通关训练,语法透视,考点大观,易错辨析,通关训练,基数词定义及拼写,表示数目的词称为基数词。其形式如下：1）112,独立成词。one two three four five six seven eight nine ten eleven twelve,语法透视,考点大观,易错辨析,通关训练,基数词定义及拼写,2）1319,由39+teen构成。14fourteen 16-sixteen 17-seventeen 19nineteen 特殊拼写:13 thirteen 15-fifteen 18eightee

2、n 3）2090,以-ty结尾。20twenty 30thirty 40forty 50fifty 80eighty 60sixty 70seventy 90ninety,语法透视,考点大观,易错辨析,通关训练,基数词定义及拼写,4）2199，两位数，十位与个位之间有“”。twenty-one 55 fifty-five 99 ninety-nine5）101999，三位数，百位与十位/个位之间加and。101 one hundred and one840 eight hundred and forty693 six hundred and ninety-three,语法透视,6)1，000以

3、上数目,从右向左每三位用“，”分开,分别读为thousand,million,billion,考点大观,易错辨析,通关训练,基数词定义及拼写,29,431,500,7,6,thousand,hundred,million,billion,and,语法透视,1、表示具体数目,hundred,thousand,million不用复数。表示不确定数目,用复数。即hundreds of(数百),thousands of(数千),millions of(数百万)+名词复数,可以用many/several修饰，但不能与具体数目连用。1)Our country has a population of 1,3

4、00 million people.2)There are three thousand students in our school.3)After the war,thousands of people became homeless.4)Several/Many thousands of trees must be planted every year.,考点大观,易错辨析,通关训练,特殊基数词的用法,语法透视,3、“基数词+名词”的合成形容词作定语，中间有连字符“”,当中的名词用单数。a 3 year old girl a seven-day holiday,考点大观,易错辨析,通关训

5、练,其他基数词的用法,4、表计量“基数词+度量单位+形容词”。The classroom is 7 meters long,6 meters wide and 3 meters high.,语法透视,1)顺读法先时后分,“几点几分”9:30 nine thirty 6:21 six twenty-one,考点大观,易错辨析,通关训练,表示时刻,2)逆读法先分后时 表示“几点过几分”，半小时以内，介词用past 分钟数+past+钟点数 10:10 ten past ten 8:20 twenty past eight表示“几点差几分”，半小时以上，介词用to 60减原分钟+to+(下一个)钟点

6、数 9:50 ten to ten 7:40 twenty to eight,语法透视,考点大观,易错辨析,通关训练,表示时刻,3)15分钟：a quarter 30分钟：a half 9:15 a quarter past nine 12:30 half past twelve,语法透视,解析,Nine _ pounds a week?Thats very good.A.hundred of B.hundreds ofC.hundreds D.hundred,Next,考点大观,易错辨析,通关训练,The number 2,564 is written as_.two thousand five hundred and sixty-fourtwo thousand five hundred sixty-fourtwo thousand five hundred and sixty fourtwo thousands five hundreds and sixty-four,语法透视,解析,考点大观,易错辨析,通关训练,Homework:,Finish exercise“基数词专项练习”。,