小学英语数词讲解

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1、数词：1.0---10010001，000，000一个写一遍2.序数词1---303.背会冠词的所有条款和例子数词：num.分为基数词和序数词。基数词口诀：thirteen基数词须注意，0—12逐个记，13-19有规律，teen加后面，13ir把ree替，thirteen15f把ve替，fifteen18之中少个t.eighteen20—90后面紧跟ty.20en把o替。two—twenty30ir把ree替。thirty40去u.four—forty50f把ve替。fifty80少t.eighty怎样拼写几十几，ty后面紧跟-

2、.21twenty-one100—onehundred100姓hu的把nd打成red.1,000---onethousandthou—太后san—3d—弟1,000,000---onemillionmi—米l—1lion—狮子billion---十亿序数词口诀：123全变，first,second,third4以上加th,8去t,9去e,eighthninth5,12f要把ve替，fifthtwelfth几十，ty---tieth第1---第31---缩写留词尾2字母first1stsecond2ndthird3rdfourth

3、4thfifth5thsixth6thseventh7theighth8thninth9thtentheleventhtwelfththirteenthfourteenthfifteenthsixteenth……eighteenthtwentieth20thtwenty-first21sttwenty-second22ndtwenty-third23rdtwenty-fourth24ththirtieth30ththirty-first31stonehundredthonehundredandfirst第101基数词和序数词的应

4、用：1.页数，房间号，电话号码，班级年级，车牌号，公交车次，年份，排号，层数，日期。Page112Room201138/0477/5622252/2162ClassFourGradeFourBusNo.5MBME00719，78年—分两节2012年—twothousandandtwelve645年—不可以分节读22，00年---分两节twenty-twohundred层数:IliveonFloorSix.=Iliveonthesixthfloor.1.时间的表达法口诀:分在前，点在后。过past,（不超过半小时）差to(分用60

5、减，点用1来加)超过半小时整点o’clock.半小时half.一刻aquarter.上午AM下午PM在几点用at.6:00---sixo’clock6:30---halfpastsix6:15---aquarterpastsix6:45—aquartertoseven18:00—6:00PM23:48---twelvetotwelvePM11：48PM6:07---sevenpastsix分数的表达法：分子—基数词分母—序数词1/2---ahalf/onesecond1/4---aquarter3/4----threequart

6、ers1/5---onefifth2/5----twofifths当分子是1时，序数词照常。当分子大于1时，序数词+s.3/102/72/35/81/9小数：点前照常说数字，点后逐个说。0.3---zeropointthree0.45—zeropointfourfive178.698---onehundredandseventy-eightpointsixnineeight百分比：%10%---tenpercenthundredsof成百上千thousandsof成千上万millionsof数以百万计yuanmujinli---

7、单复数不变dollarsfiftydollarsLesson9考试：1.2013twothousandandthirteen2.1998nineteenninety-eight3.40%fortypercent4.1/2ahalf/onesecond5.1/4aquarter/onefourth1.3/4threefourths/threequarters7.9.125ninepointonetwofive1.173onehundredandseventy-three9.3842threethousandeighthundred

8、andforty-two10.7：45aquartertoeight11.7：15aquarterpastseven12.7：00seveno’clock13.19：00seveno’clockPM14.五年六班ClassSixGradeFive15.7：30h