基数词

基数词MissDi数词表示数量多少和顺序先后的词。序数词基数词英文表达：numeralnum.12345678910onetwothreefourfivesixsevennine111213141516171819eightteneleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen+teenTips：从13到19都以_______结尾teeneeelvn十一num.Tips：与2有关的单词，除了第二,都以________开头。twtwotwelvetwentysecondTips：与3有关的单词,除3以外,都以____开头。thirthirteenthirtythirdthreeTips：与5有关的单词，除5以外,都以____开头。fiffifteenfiftyfifthfive几十几十的都在后面加？？？？？Tips：整十都以____结尾。ty1112201330144015501660177018801990thirtyfortytwenty+teen+tyfiftysixtyseventyeightyninetyeleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen基数词21~99twentyone21Tips:十位与个位中间加”连字符“.fortyeight48Writethecardinalnumerals.1.852.473.534.645.796.39eighty-fiveforty-sevenfifty-threethirty-nineseventy-ninesixty-fourhund百Tips:百前有具体数字,百后不加__。reds四百fourhundredthreehundredTips:321andtwenty-one当百位后有数字时,百后加_____。andfourhundredandfifty-six456Writedownthenumbers.1.3782.4473.5294.658threehundredandseventy-eightfourhundredandforty-sevenfivehundredandtwenty-ninesixhundredandfifty-eight5.2086.4007.9108.999Writedownthenumbers.twohundredandeightfourhundredninehundredandtenninehundredandninety-nine1，000以上数目,从右向左每三位用“，”分开,分别读为thousand,million,billion6,500,431,729billionmillionthousandhundredandFillintheblanks1.Threepluseightis_______.2.Thereare__________________daysinayear.3.Thereare_______monthsinayear.4.It’s10:40,andwecanreaditlikethis:__________.5.Therearetwo_______(百)peopleinthemeetingroom.6.WeareinClass_____Grade_____.eleventhreehundredandsixty-fivetwelvetenfortyhundredSixSeven基数词的用法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hundredsof(数百),thousandsof(数千),millionsof(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)Ourcountryhasapopulationof1,300millionpeople.2)Therearethreethousandstudentsinourschool.3)Afterthewar,thousandsofpeoplebecamehomeless.4)Several/Manythousandsoftreesmustbeplantedeveryyear.2、“几十”的复数形式可以表示：几十多岁----in+one’s+数词复数年代----in+the+数词复数1)Hediedinhisforties．四十多岁2)Inthenineties,mostpeoplegotoworkbybike.90年代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。a3–year–oldgirlaseven-dayholiday4、表计量--“基数词+度量单位+形容词”Theclassroomis7meterslong,6meterswideand3metershigh.5、表示时刻(介词用at)1)顺读法----先时后分,“几点几分”9:30ninethirty6:21sixtwenty-one3)15分钟：aquarter30分钟：ahalf9:15aquarterpastnine12:30halfpasttwelve2)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10:10tenpastten8:20twentypasteight表示“几点差几分”，半小时以上，介词用to60减原分钟+to+(下一个)钟点数9:50tentoten7:40twentytoeight(1)序数词作定语，前面要加the；Thefirsttruckiscarryingafoodbasket．Johnlivesonthefifteenthfloor．SheismyfirstEnglishteacher.(2)有时加a/an，“再一”，“又一”的意思We‘llhavetodoitasecondtime．ShallIaskhimathirdtime？WhenIsatdown，afourthmanrosetospeak．Theyhadasecondchildin1988序数词的用法编号表示法编号在前，名词在后，用序数词，前面有the编号在后，名词在前，用基数词，注意首字母大写房间号码和电话号码要一个一个分别读TheFirstLesson（在句子中不大写）LessonOnethethirty-secondpagePage32/PageThirty-twoRoom305BusNo.12第一课第32页第305房间第12路公共汽车1/4one-fourtha(one)quarter3/4three-fourthsthreequarters2/3two-thirds1/2a(one)half半年halfayear半小时halfanhour一年半oneandahalfyearsoneyearandahalf分数表示法分子用基数词，分母用序数词。分子大于1时，分母加-s。1999nineteenninety-nine2008twothousandandeight1949年10月1日读作:October(the)first,nineteenforty-nine(月-日，年)thefirstofOctober,nineteenforty-nine（日-月，年）写作:October1st,1999(日用缩写，月-日-年)October1,1999(日用数字)1stOctober,1999日-月，年年份、日期表达法年用基数词表示,两位一读,介词用in日用序数词表示,介词用on表示“在…世纪”,用序数词。在20世纪写作：in20thcentury读作：inthetwentiethcentury1/21/31/424/253/43threefourths/threequartersonethird/athirdtwenty-fourtwenty-fifthsthreeandsixseventhsonequarter/aquarter/onefourthahalfCanyoureadafraction?July1,1921October1,1949August1,1927May,1922Whenweretheyfounded?PRCLeaguePLACCPThe___wasfoundedon/in___1.Whatistenandeight?2.Howoldareyou?3.Whenwereyouborn?4.Whatclassareyouin?5.Howmanystudentsarethereinyourclass?6.What’syourtelephonenumber?7.HowlongistheGreatWall?8.What’sthepopulationofChina?9.Whendoyouusuallygetup?AskandanswerinpairsTryyourbest!speakloudlyandquickly!test144050151770901918806016Summary(小结)1.基数词的构成（6点）2.序数词的构成（5点，记歌谣）3.基数词的用法(hundred,thousand,million、岁数与年代、“基-名-形”、计量、时刻）4.序数词的用法(加the,a/an)5.编号表示法(可用序数词/基数词,注意加the或大写)6.分数表示法(分子:基数分母:序数)7.年份、日期、的表达法(年:基数日、世纪:序数)