小升初語(yǔ)法專(zhuān)項(xiàng)數(shù)詞課件

語(yǔ)法-數(shù)詞什么是數(shù)詞？數(shù)詞基數(shù)詞序數(shù)詞表示事物數(shù)量或順序的詞叫數(shù)詞。表示數(shù)量多少的數(shù)詞。表示順序的數(shù)詞。巧記基數(shù)詞數(shù)字基數(shù)詞序數(shù)詞序數(shù)詞縮寫(xiě)1onefirst1st2twosecond2nd3threethird3rd4fourfourth4th5fivefifth5th基數(shù)詞\序數(shù)詞一覽表基數(shù)詞\序數(shù)詞一覽表6sixsixth6th7sevenseventh7th8eighteighth8th9nineninth9th10tententh10th11eleveneleventh11th12twelvetwelfth12th基數(shù)詞\序數(shù)詞一覽表13thirteenthirteenth13th14fourteenfourteenth14th15fifteenfifteenth15th16sixteensixteenth16th17seventeenseventeenth17th18eighteeneighteenth18th基數(shù)詞\序數(shù)詞一覽表19nineteennineteenth19th20twentytwentieth20th21twenty-onetwenty-first21st22twenty-twotwenty-second22nd30thirtythirtieth30th40fortyfortieth40th基數(shù)詞\序數(shù)詞一覽表50fiftyfiftieth50th60sixtysixtieth60th70seventyseventieth70th80eightyeightieth80th90ninetyninetieth90th100onehundredonehundredth100th101onehundredandoneonehundredandfirst101st基變序，有規(guī)律，結(jié)尾要加-th；1，2，3特殊記，結(jié)尾各為t，d，d；8少t，九去e，ve要用f替(5\12\15)；遇y變成i(幾十)，結(jié)尾再加-eth；若是遇到幾十幾，只變個(gè)位就可以?；鶖?shù)詞變序數(shù)詞口訣基數(shù)詞用法一、基數(shù)詞表示數(shù)量。如：一周oneweek

七天sevendays51個(gè)學(xué)生fifty-fivestudents

數(shù)字＞1，名詞+s基數(shù)詞用法二、基數(shù)詞的讀法。如：233讀作：twohundredandthirty-three2,333讀作：twothousand,threehundredandthirty-three

【注意】百位與十位間用and連接；

十位與個(gè)位間要用“-”連接。

基數(shù)詞用法基數(shù)詞用法三、關(guān)于hundred(百)、thousand(千)、million(百萬(wàn))、billion(十億)的用法。

如：兩千人

兩百萬(wàn)元

數(shù)以千計(jì)的人

數(shù)百萬(wàn)孩子們

【注意】具體數(shù)字+hundred/thousand/million

概數(shù)+hundreds/thousands/millions+of+名詞復(fù)數(shù)重要！twothousandpeopletwomillionyuanthousands

ofpeoplemillions

ofchildren基數(shù)詞用法【小練】

識(shí)數(shù)1.threehundredandsixty-five________2.ninemillion_______3.thousandsoftrees_________4.fivehundredandtwenty-oneChinese_______5.ninethousand,twohundredandfifty-eight_______6.eighteenmonths_______7.onehundredandeighty-seven_______3659,000,000數(shù)以千計(jì)棵樹(shù)521個(gè)中國(guó)人925818個(gè)月187基數(shù)詞用法四、關(guān)于年齡的表達(dá)。

如：這個(gè)女孩子八歲。

Thegirliseightyearsold.Sheisaneight-year-oldgirl.

.【注意】

基數(shù)詞+yearsold幾歲

基數(shù)詞-year-old

+n

幾歲的adj.基數(shù)詞用法【小練】()1.Nancyis_____lady.A.aeighteen-years-oldB.aneighteen-year-oldC.aneighteen-years-oldD.an-eighteen-year-oldB基數(shù)詞用法五、關(guān)于時(shí)間的表達(dá)。1.順讀法：點(diǎn)鐘＋分鐘

例：6:45

13:14

【小練】

①twoforty-five_____②eighttwenty-three_____2:458:23sixfourty-fivethirteenfourteen基數(shù)詞用法五、關(guān)于時(shí)間的表達(dá)。

2.

逆讀法：①分鐘≤30，用past(過(guò))

分鐘＋past＋點(diǎn)鐘

(譯為“幾點(diǎn)過(guò)幾分”)

例：4:15

fifteenpastfour=aquarterpastfour

6:30

【

注意】quarter四分之一(15分鐘)

half一半(30分鐘)thirtypastsix＝halfpastsix基數(shù)詞用法五、關(guān)于時(shí)間的表達(dá)。

2.

逆讀法：②分鐘＞30分鐘,用to;

分鐘(60－分鐘數(shù))＋to＋(點(diǎn)鐘＋1)，(譯為“幾點(diǎn)差幾分’’)

如：7:40

8:45

twentytoeightaquartertonine＝fifteentonine基數(shù)詞用法五、關(guān)于時(shí)間的表達(dá)。

3.

整點(diǎn)的表達(dá)：點(diǎn)鐘(＋o'clock)。

如：9:00

nine

(o'clock)

【綜合小練】讀點(diǎn)鐘1.halfpastseven______2.aquartertoten______3.fourteeneighteen_____4.teno’clock__________5.twenty-fivetoeleven_______7:309:4514:1810:0010:35基數(shù)詞用法六、編號(hào)的表達(dá)。名詞＋基數(shù)詞＝the＋序數(shù)詞＋名詞(注意大小寫(xiě))

如：LessonOne＝thefirstlesson第一課

Page4＝thefourthpage第四頁(yè)

Room105

105房間

基數(shù)詞的用法基數(shù)詞1表具體的數(shù)量，注意+s2讀法注意，用and和“-”3hundred\thousand\million4表年齡5表時(shí)間，逆讀法past\to6表編號(hào)序數(shù)詞用法序數(shù)詞用法一、序數(shù)詞表示順序，前面一般有the或形容詞性物主代詞修飾，后面一般+單數(shù)名詞。

如：Mondayistheseconddayoftheweek.

Augustisthe

eighthmonth.

Todayishistwentiethbirthday.序數(shù)詞用法二、日期的表達(dá)月-日-年，日-月-年

如：Augusttheseventh,2022

＝

August

7th,2022

＝theseventhofAugust,2022序數(shù)詞用法三、分?jǐn)?shù)的表達(dá)：分子用基數(shù)詞，分母用序數(shù)詞，分子大于1時(shí)，分母變復(fù)數(shù)。

例：

15基數(shù)詞序數(shù)詞onefifth25基數(shù)詞＞1序數(shù)詞+stwofifths序數(shù)詞用法【綜合小練】()1.--David,howoldisyourfatherthisyear?--________．Andwejusthadaspecialpartyforhis________birthdaylastweekend.A．Fortieth;forty B．Forty;fortyC．Forty;fortieth D．Fortieth;fortiethC序數(shù)詞用法【綜合小練】()2.It'ssaidthat________ofthewateraroundtheworldispolluted.A．twothirds B．twothree C．twothird D．secondthreeA序數(shù)詞的用法序數(shù)詞1表示順序排序，注意序數(shù)詞前+the，后+名詞單數(shù)2表示日期的幾日，August7th3分?jǐn)?shù)的表達(dá)onefifth,twofifthsLet’spractice一、在橫線上填寫(xiě)合適的數(shù)詞，把下面的算術(shù)題補(bǔ)完整

+____=twelve2.

________-twenty-six=twenty

3._______-

four=eight

4.___________÷nine=eleven5.thirteenxfour=_______6.sixty-fifteen=________7.eightxseven=______8._________÷seven=two

xnine=_________10.sixx_____=twenty-fourfiveforty-sixtwelveninety-ninefifty-twoforty-fivefifty-sixfourteenfifty-fourfour二、把下列基數(shù)詞改成序數(shù)詞

one_______two________

three________

nine_______fourteen__________twenty___________thirty-five_____________sixty-four_______________

twelve_________firstsecondthirdninthfourteenthtwentieththirty-fifthsixty-fourthtwelfth三、根據(jù)實(shí)際情況用適當(dāng)?shù)臄?shù)詞填空

1.There

are___________letters

in

English

alphabet.

2.There

are

______days

in

a

we