小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com第2讲数词MisterSmithissixty①yearsoldandyesterdaywashis60th②birthday.Hestillremembersinthe1990s③whenhewasinhisthirties③，hedrankdozensof④bottlesofbeeraday.However，hespentthousandsof④dollarsinhospital.Later，twofifths⑤ofhissparetimewasspentintakingexercise.[规则感悟]①的基本形式基。数词为数词②表示的序往往用序。大部分是在基数词顺数词的基上加数词础-th。以-y尾的基序，把结数词变数词-y成变-ie再加-th。③“inthe＋逢十的基的数词复数”表示“在某世几十年代个纪”。“inone’s＋逢十的基的数词复数”表示“在某人几十多岁时”。④具体字＋数dozen/score/hundred/thousand/million等，后面直接加名词时词；表示目，用复数笼统数时dozens/scores/hundreds/thousands/millionsof＋名。词复数⑤分数表：分子用基，分母用序。分子大于达数词数词当1，分母序加时数词-s，如：1/3：onethird,2/3：twothirds。1．易错基数词thirteen十三fourteen十四fifteen十五eighteen十八nineteen十九twenty二十thirty三十forty四十fifty五十ninety九十2．易错序数词first第一second第二third第三fourth第四fifth第五eighth第八ninth第九eleventh第十一twelfth第十二3．序数词的使用(1)序数词在句中主要作定语，一般情况下序数词前要加定冠词。ThisisthesecondintangibleculturalheritageblockinGuangzhou.这是广州第二个非物质文化遗产街区。(2)序数词前有时加不定冠词，表示“又一、再一”，相当于another。Wouldyoulikeasecondcupoftea?你还想再来一杯茶吗？(3)有时序数词作状语，不加冠词。Hecameoutfirstinthecontest.他在比赛中获得第一名。对点练习小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com1．Petergotamodelshipfromhisuncleonhisthirteenth(thirteen)birthday.2．Twothirds(three)ofthestudentsinourclasshavebeentoDisneyland.3．Linda，therearetoomanymistakesintheninth(nine)lineofyourpassage.4．Hemadequiteafewfriendsduringhistwenties(twenty)．5．Itisreportedthattheearthquakehasleftthousands(thousand)ofpeoplehomeless.1．Withoutasecond(two)thought，heagreedtojointheclub.2．30%oftheriverhasbeenpolluted(pollute)bythewaterfromthefactoryalreadyandmanyfishhavedisappeared.3．Then，whenIwasinthefifth(five)grade，IwantedtobeateacherbecauseIlikedmyEnglishteacherverymuch.(2019·全国Ⅱ)