數(shù)詞1.基數(shù)詞與序數(shù)詞阿拉伯基數(shù)詞序數(shù)詞縮寫阿拉伯基數(shù)詞序數(shù)詞縮寫1onefirst1st11eleveneleventh11th2twosecond2nd12twelvetwelfth12th3threethird3rd13thirteenthirteenth13th4fourfourth4th14fourteenfourteenth14th5fivefifth5th15fifteenfifteenth15th6sixsixth6th16sixteensixteenth16th7sevenseventh7th17seventeenseventeenth17th8eighteighth8th18eighteeneighteenth18th9nineninth9th19nineteennineteenth19th10tententh10th22twenty-twotwenty-second/20twentytwentieth20th33thirty-threethirty-third/30thirtythirtieth30th44forty-fourforty-fourth/40fortyfortieth40th55fifty-fivefifty-fifth/50fiftyfiftieth50th66sixty-sixsixty-sixth/60sixtysixtieth60th77seventy-sevenseventy-seventh/70seventyseventieth70th88eighty-eighteighty-eighth/80eightyeightieth80th99ninety-nineninety-ninth/90ninetyninetieth90th////基數(shù)詞1.讀數(shù)2.hundred、thousand等使用規(guī)則數(shù)詞考點口訣：s、of同生共死；遇到數(shù)字都得死hundred百2hundredbooks、hundredsofbooksthousand千2thousandbooks、thousandsofbooksmillion百萬2millionbooks、millionsofbooksbillion十億2billionbooks、billionsofbooks序數(shù)詞1.物主代詞與the序數(shù)詞前有定冠詞the,除非遇物主（Lucy's，their，my等）Igavethesecondboyatoy.Lucy'sfirstclass/playhispiano/mybestfriend原則：物主代詞與冠詞有且只有一個2.表達方式123個別記憶onetwothreefirstsecondthird8去t,9去eeightnineeighthninthve要用f替fivetwelvefifthtwelfth見y變成i和etwentythirtytwentieththirtieth若是遇上幾十幾，只變個位就可以twenty-onetwenty-firsttwenty-onetwenty-first3.常用：樓層、生日Mikelivesonfifthfloor.It'syoureighteenthbirthday.Let'senjoyourselves.數(shù)詞的應(yīng)用1.小數(shù)、百分?jǐn)?shù)的表達23.99pointninenine3.1415926..threepointonefouronefiveninetwosix.1%onepercent2%twopercent97%ninety-sevenpercent2.編號的表達名前為序thefifthboy名后為基Boy5注意：編號大寫3.時間的表達3:00threeo'clock10:30halfpastten順讀法、逆讀法10:10順讀：先時后分tennine逆讀：先分后時ninepastten12：58順讀：先時后分twelvefifty-eight逆讀：先分后時twotoone一刻：aquarter10:15aquarterpastten9:45特權(quán)：threequarterspastnine4.表示年份、年代（1）年份用基數(shù)詞表達in2022/in1949（2）年代用“inthe+基數(shù)詞的復(fù)數(shù)”表達inthe1980s/1980's在20世紀(jì)80年代讀作”“ainthetwentytwenties”5.表示年齡（1）基數(shù)詞yearsold表示“....歲”Heis15yearsold（2）attheageof+基數(shù)詞表示“在某人多少歲的時候”H