2023學(xué)年完整公開課版數(shù)詞

數(shù)詞

1.定義：數(shù)詞分為_______和_______。表示數(shù)目多少的數(shù)詞叫基數(shù)詞cardinalnumbers。表示順序的數(shù)詞叫序數(shù)詞ordinalnumbers

。2.基數(shù)詞又分為：___________和_____.

表示數(shù)目多少或順序多少的詞叫數(shù)詞。基數(shù)詞序數(shù)詞整數(shù)分?jǐn)?shù)小數(shù)

基數(shù)詞

1基數(shù)詞寫法和讀法：345

2基數(shù)詞一般是單數(shù)形式，但下列情況，常用復(fù)數(shù)：a.與of短語連用，表示概數(shù)，不能與具體數(shù)目連用，如成千上萬的人b.在一些表示"一排"或"一組"的詞組里；如：他們?nèi)齼蓛傻牡竭_(dá)了。c.在乘法運(yùn)算的一種表示法里，如：

3x5=15d年代、年齡等的表達(dá)。二十世紀(jì)八十年代在他三十幾歲時(shí)3.負(fù)數(shù)表達(dá)法：-25

Threefivesisfifteen.inhisthirtiesthe1980s或1980’sTheyarrivedintwosandthrees.thousandsofpeoplethreehundredandforty-fiveminustwenty-five

4.倍數(shù)表示法(了解)a.倍數(shù)/或分?jǐn)?shù)+as+adj.+as我有你三倍那么多。b.倍數(shù)/分?jǐn)?shù)+thesize(amount,length…)of…地球是月球的49倍。c.倍數(shù)/分?jǐn)?shù)+形容詞/副詞比較級(jí)+than…今年比去年糧食產(chǎn)量增加8%。d.還可以用by+倍數(shù)，表示增加多少倍今年糧食產(chǎn)量增加了4倍。

Ihavethreetimesasmanyasyou.Theearthis49timesthesizeofthemoon.Thegrainoutputis8percenthigherthisyearthanthatoflastyear.Thegrainoutput

hasbeenincreasedbyfourtimesthisyear.

4.分?jǐn)?shù)表達(dá)法規(guī)則：分子用基數(shù)詞,分母用序數(shù)詞;當(dāng)分子>1時(shí),分母用復(fù)數(shù)。百分比則用基數(shù)詞加percent即可。3/4----7/20---1/3---80%---分?jǐn)?shù)修飾可數(shù)名詞單數(shù)時(shí)，名詞作______。分?jǐn)?shù)修飾可數(shù)名詞復(fù)數(shù)時(shí)，名詞作______。分?jǐn)?shù)修飾不可數(shù)名詞時(shí)，名詞作________。1.2/3ofthebooksinourlibrary___inEnglish.(be)2.7/10oftheearth_____coveredwithwater.(be)3.4/5oftherice_______(smell)bad.three-fourths/threequartersseven-twentiethsone-thirdeightypercent單數(shù)復(fù)數(shù)單數(shù)areis

smells5.小數(shù)表達(dá)法以小數(shù)點(diǎn)為界，小數(shù)點(diǎn)左首的數(shù)字為一個(gè)單位，表示整數(shù)，數(shù)字合起來讀;小數(shù)點(diǎn)右首的數(shù)字為一個(gè)單位，表示小數(shù)，數(shù)字分開來讀;小數(shù)點(diǎn)讀作point,o讀作zero或o[?u],整數(shù)部分為零時(shí),零可以省略不讀。

0.425.67l.03當(dāng)數(shù)字值大于1時(shí)，小數(shù)后面的名詞用作_____;數(shù)字值小于1時(shí)，小數(shù)后面的名詞用作______。

zeropointfour或pointfourtwenty-fivepointsixsevenonepointothree復(fù)數(shù)單數(shù)基數(shù)詞變?yōu)樾驍?shù)詞的規(guī)律：123456789101112131415161718192132986040總結(jié)個(gè)位數(shù)，十幾，幾十幾。和幾十變?yōu)樾驍?shù)詞的規(guī)律。基數(shù)詞＋th=序數(shù)詞firstonesecondtwothreethirdfour

thfithvefthsixhththseveneightnineteneleventwelthirteenfourteenfifteenththththththfvesixteenseventeeneighteenththhththththnineteenfirst

twenty-secondthirty-ninety-eightonetwoieiesixtfortyy

練習(xí)：20________________99_________12____________21_____________45_____________33_______________

twentiethninety-ninthtwelfthtwenty-firstforty-fifththirty-third習(xí)題1.______peoplevisitthismuseumeveryday.A.HundredB.HundredsC.HundredofD.Hundredsof2.Therearetwo___peopleinthemeetingroom.A.hundredB.hundredsC.hundredsofD.hundredof3.____thetreesinourschoolhavebeencutdowninthepast10years.A.ThousandsofB.TwothousandsC.ThousandofD.Twothousandof

DAD4.Thereare___daysinayear.threehundredssixty-fiveB.threehundredsandsixty-fiveC.threehundredandsixty-fiveD.threehundredandsixtyfive5.Look!Thereare___inthesky.A.thousandstarsB.thousandofstarsC.thousandsofstarsD.thousandsofstar6.Mybrotherisin____.A.ThreeClass,OneGradeB.ClassThree,GradeOneC.GradeOne,ClassThreeD.classthree,gradeone

CCB7.Wecansaythenumber78,645inEnglishlikethis____.A.seventy-eightthousandandsixhundredandforty-fiveB.seventy-eightthousandsixhundredandfortyfiveC.seventy-eightthousandsixhundredandforty-fiveD.seventyeightthousandsixhundredandforty-five8.DuringWorldWarⅡ，aJewishladywasprotectedbyalocalfamilyinShanghaiinher______.A.fiftiethB.fiftyC.fiftiesD.thefiftieth9.ItissaidthegravityonMarsisonlyabout__ofthegravityonEarth.A.three-eighthsB.third–eighthC.three-eightsD.third-eight

CCA10.Eachofushastowritea___reporteveryweek.A.two-hundred-wordB.twohundredthwordC.two-hundred-wordsD.twohundredwords11.Whenspringcomes,_______treesareplanted.amillionofB.millionsofC.millionsD.twomillions12.__________oftherice_____bad.A.Two-seventh,isB.Two-sevenths,areC.Two-sevens,isD.Two-sevenths,is

ABD在英國(guó)，樓房的第一層叫做,第二層叫,依次類推。而在中國(guó)美國(guó)及其它國(guó)家，樓房的第一層叫做

,第二層叫,依次類推。而在地面下，依次為地下一層地下二層等。

thegroundfloorthefirstfloorthefirstfloorthesecondfloor