人教版七年级上册《英语》期末复习数词词法ppt课件.pptx

1、语法：数词语法语法 数词数词 定义 分类 数词的考点语法语法 数词数词【数词定义】表示数量或顺序。表示数量或顺序。Numerals/num.Numerals/num.【数词分类】数词基数词序数词描述事物数量数量多少的数词(Cardinal numbers)表示顺序顺序的数词(Ordinal numbers)语法语法 数词数词【数词分类】基数词基数词1）基数词的形式基数词，容易记，0到12词各异，十几结尾都有teen，13 thirteen要注意，fifteen，要牢记；18 eighteen 少个t，19 nineteen 不丢e；要说几十怎么办？teen变ty20 twenty头一样，40

2、forty不要u;要是遇到几十几，几十横线再加几；zero 0one 1two 2three 3four 4five 5six 6seven 7eight 8nine 9ten 10eleven 11twelve 12thirteen 13fourteen 14fifteen 15sixteen 16seventeen 17eighteen 18nineteen 19twenty 20twenty-one 21thirty 30forty 40fifty 50sixty 60seventy 70eighty 80ninety 90one hundred 1003 1 9 9 8 2 3 7 4

3、 83 1 9 9 8 2 3 7 4 82 2）大额数字的表达）大额数字的表达,thousandmillionbillionthree billion one hundred ninety-nine million eight hundred twenty-three thousand seven hundred and forty-eight语法语法 数词数词【数词分类】语法语法 数词数词【数词分类】3 3）hundred,thousand,million,billion hundred,thousand,million,billion 的特殊运用的特殊运用1.1.表示表示具体、准确的数目

4、时，具体、准确的数目时，hundred,hundred,thousand,thousand,millionmillion后不加-s s e.g.four hundred,two thousand,seven million 2.2.hundredhundred,thousand,thousand等数词与等数词与of of 连用连用，表示不具体、不准确的数目，表示不具体、不准确的数目时，词尾须加时，词尾须加-s-s。e.g.thousands of birds,millions of people.语法语法 数词数词当堂练1.How many people come to the Qiandao

5、 Lake this year?Its hard to say,_ people,I think.A.million of B.millions of C.three millions D.three millions of 2._ sheep are on the farm.A.Thousand of B.Thousand C.Thousands of3.There are over nine _ workers in the factory（工厂）,but _ of young people hope to work in it.A.hundred of;hundreds B.hundre

6、d;hundreds C.hundreds;hundred语法语法 数词数词【数词分类】注意a a 和和 one one 的区别的区别a 侧重东西种类，one 表示数量I have a penpen.我有一支笔笔。（重点在有笔）I have oneone pen.我有一支笔。（重点在一支）语法语法 数词数词【数词分类】序数词序数词基变序,有规律,词尾加上-th;一二三,特殊记,单词结尾t,d,d;八去t,九减e,f来把ve替;-ty要变tie,然后再加th。如果要变几十几，只变个位就可以。解析说明:“第一”“第二”“第三”分别是first,second,third,它们的结尾字母分别是t,d,

7、d。eight变成eighth时,词尾只加-h,相当于把eight中的t减掉,再加-th。nine变成 ninth时,要去掉e。fivefifth,twelvetwelfth,都是把ve改为f,再加-th。以-ty结尾的表示“整十”的基数词,变成序数词时,把y改为i,再加-eth。如:twentytwentieth,thirtythirtieth。表示“几十几”的基数词(十几除外)变序数词时,只把个位数变成序数词即可。语法语法 数词数词zero 0one 1two 2three 3four 4five 5six 6seven 7eight 8nine 9ten 10eleven 11twelv

8、e 12thirteen 13fourteen 14fifteen 15sixteen 16seventeen 17eighteen 18nineteen 19twenty 20twenty-one 21thirty 30forty 40fifty 50sixty 60seventy 70eighty 80ninety 90one hundred 100first 1stsecond 2ndthird 3rdfourth 4thfifth 5thsixth 6thseventh 7theighth 8thninth 9thtenth 10theleventh 11thtwelfth 12tht

9、hirteenth 13thfourteenth 14thfifteenth 15thsixteenth 16thseventeenth 17theighteenth 18thnineteenth 19thtwentieth 20thtwenty-first 21stthirtieth 30thfortieth 40thfiftieth 50thsixtieth 60thseventieth 70theightieth 80thninetieth 90thone hundredth 100th序数词要加定冠词the，但若序数词前有形容词性物主代词或名词所有格时省略the。my fathers

10、fortieth birthday注意语法语法 数词数词【数词考点】1 1）时间的表达）时间的表达 顺顺读法读法 12:00 twelve oclock12:00 twelve oclock7:15 7:15 seven fifteen seven fifteen 2:30 two thirty 2:30 two thirty 10:40 ten 10:40 ten forty forty （halfhalf）一个半小时一个半小时两个半小时两个半小时 one and a half hours=one hour and a half two and a half hours=two hours

11、and a halfThe boy always stays there for _.A.three and half hour B.three hour and a half C.three and a half hours2 2）日期的表达）日期的表达语法语法 数词数词【数词考点】1.年份用基数词，两位一计 2022年年 2008年年in twenty twenty-two in two thousand and eight in nineteen ninety-eight 1998年年2.日用序数词在在20222022年年1212月月2121日日on the seventeenth of

12、 December，2022on December the seventeenth，2022on the morning of December the seventeenth，2022上午上午语法语法 数词数词【数词考点】3 3）年龄的表达）年龄的表达基数词+years old at the age of+基数词 注：只用作表语时，不用连字符，名词有复数。She is 10 years old.作定语时，用连字符，名词是单数。She is a 10-year-old girl.The winner（胜利者）is _.He is an _ boy.A.eight-year-old;eight

13、years old B.eight years old;eight-year-old C.eight-years old;eight-year-oldHe came to China _.A.at the age of 20 B.when he is 20 C.at age of 204 4）小数和百分数的读法）小数和百分数的读法 1.小数小数，小数点前按基数词的读法读，后面的数单个读，小数点 pointpoint.22.56 twenty-two pointpoint five six 99.99 ninety-nine pointpoint nine nine 2.百分数百分数，在数后面加

14、percentpercenteg:15%60%语法语法 数词数词【数词考点】fifteen percentpercentsixty percentpercent5 5）分数分数的表达的表达分子基，分母序，分子大于1，分母加s1/3 one third2/3 two thirds s1/2one second1/4a halfa halfone fourtha quartera quarter语法语法 数词数词【数词考点】/kwt(r)/7 7）编号的表达）编号的表达 序号在前用序数词，序号在后用基数词(首字母大写)第2 课：the second lessonL Lesson T Two第5 页

15、：the fifth page P Page F Five520号房间：Room 520语法语法 数词数词【数词考点】七3班4班：Class ThreeClass Four，Grade Seven1.There are _ days in a week and Sunday is _ day of the week.A.seven;first B.seven;the firstC.seventh;one D.the seventh;one2.There are 60 students in my class and 40 of them use We Chat very often.40?That means _ of your classmates are We Chat users,right?A.a half B.one thirdC.two thirds D.three quarters3.Seven _ students in our school are from countryside.A.hundreds B.hundred C.hundreds of D.hundred of4.He got a good gift on his _ birthday.A.fourteenth B.forties C.the fortieth语法语法 数词数词【当堂练】