+Unit+1-2单元++Grammar+语法知识点课件+2023-2024学年牛津译林版七年级英语下册.pptxVIP

7BUnit1GrammarCardinalnumbers（基数词）andOrdinalnumbers(序数词)Let’sreadfrom10to100.101112teneleventwelve13141516171819thirteenfourteenfifteensixteenseventeeneighteennineteen2030405060708090twentythirtyfortyfiftysixtyseventyeightyninety212223twenty-onetwenty-twotwenty-three100onehundredCanyoureadthenumbers?sevenhundredandfifteen715422554218901fourhundredandtwenty-twofivehundredandfifty-fourtwohundredandeighteenninehundredandonelargenumbers1,000,000onemillion100,000onehundredthousand10,000tenthousand1,000onethousand345698724从右到左，每三个数字为一个单位，用逗号隔开。如何读数字？345,698,724第一个逗号前是千，第二个逗号前是百万。十与个用连字符号，百与十有and.threehundredandforty-fivemillionsixhundredandninety-eightthousandsevenhundredandtwenty-four4,05634,912457,1266,436,210fourthousandandfifty-sixthirty-fourthousandninehundredandtwelvefourhundredandfifty-seventhousandonehundredandtwenty-sixsixmillionfourhundredandthirty-sixthousandtwohundredandtenHowdowesayit?onehundredandeighty1801,81591,000260,0008,000,00013,000,000onethousandeighthundredandfifteenninety-onethousandtwohundredandsixtythousandeightmillionthirteenmillionfirstsecondtwelfththirdfifthninthtwentiethnumbersCardinalnumbersOrdinalnumbersnumbersCardinalnumbersOrdinalnumbers1one11eleveneleventh2two12twelve3three13thirteenthirteenth4fourfourth14fourteenfourteenth5five15fifteenfifteenth6sixsixth16sixteensixteenth7sevenseventh17seventeenseventeenth8eighteighth18eighteeneighteenth9nine19nineteennineteenth10tententh20twentytwenty-firstnumbersCardinalnumbersOrdinalnumbers21twenty-one22twenty-twotwenty-second23twenty-threetwenty-third30thirtythirtieth40fortyfortieth50fiftyfiftieth60sixtysixtieth70seventyseventieth80eightyeightieth90ninetyninetieth100onehundredonehundredth基数词变序数词口诀：1，2，3，特殊记,th从4起,8去t,9去e,ve要用f替，ty变成tie,若要变成几十几，只变个位就可以。语法小结一、基数词用法1.基数词在表示数量时与表示编号、号码时的读法不一样。数字：87,300,005读作：eighty-sevenmillionthree