序數(shù)詞、分?jǐn)?shù)課件

Numbers英語(yǔ)專項(xiàng)復(fù)習(xí)數(shù)詞Numbers英語(yǔ)1序數(shù)詞序數(shù)詞21.序數(shù)詞一般由基數(shù)詞后加th構(gòu)成，前面一般加定冠詞the。第18第2002.以y結(jié)尾的基數(shù)詞構(gòu)成序數(shù)詞時(shí)，先把y改成i，再加eth。第50第203.不規(guī)則的序數(shù)詞有以下幾個(gè)first,second,third,fifth,eighth,ninth,twelfth（一定要記住）theeighteenththetwohundredththefiftieththetwentieth1.序數(shù)詞一般由基數(shù)詞后加th構(gòu)成，前面一般加定冠詞the3

first

1st

second2nd

third

3rdfourth4th

fifth

5thsixth

6thseventh7th

eighth

8th

ninth9thtwelfth

12thtwentieth20ththirtieth30thfortieth40thfiftieth50thsixtieth60thseventieth70theightieth80thninetieth90thfirst1sttwelfth4C．序數(shù)詞的縮寫(xiě)形式:阿拉伯?dāng)?shù)字后加上th。

irst—lstsecond—2ndthird—3rd

fourth—4thtwentieth—20th

twenty-third—23rd

D．序數(shù)詞的句法功能

序數(shù)詞在句中可作主語(yǔ)、賓語(yǔ)、定語(yǔ)和表語(yǔ)。

ThesecondiswhatIreallyneed．（作主語(yǔ)）

Hechoosethesecond．（作賓語(yǔ)）

Wearetocarryoutthefirstplan．（作定語(yǔ)）

Sheisthesecondinourclass．（作表語(yǔ)）C．序數(shù)詞的縮寫(xiě)形式:阿拉伯?dāng)?shù)字后加上th。

irst—ls54.表示第幾十幾時(shí)，十位用基數(shù)詞，個(gè)位用序數(shù)詞，十位和各位用連字符-連接第三十一第六十五第七十四第九十九第八十二thirty-firstsixty-fifthseventy-fourthninety-nintheighty-second4.表示第幾十幾時(shí)，十位用基數(shù)詞，thirty-first65.編號(hào)的三種表示法1）名詞＋基數(shù)詞

LessonThree2）the＋序數(shù)詞＋名詞

thethirdlesson3）名詞＋數(shù)字

Lesson3如：5班ClassFive=thefifthclass=Class55.編號(hào)的三種表示法7一般編碼用名詞+基數(shù)詞207房三年級(jí)一班第五部分第一課3號(hào)汽車第一中學(xué)Room207ClassoneGradethreepartfive=thefifthpartlessonone=thefirstlessonBusNo.3=

theNo.3busNo.1MiddleSchool四.數(shù)詞的表示法—編號(hào)一般編碼用名詞+基數(shù)詞Room207四.數(shù)詞的表81、ThisisMrWhite’s____visitinBeijing.Hehasbeentheretwicebefore.A.twoB.secondC.threeD.third2、Thereare____monthsinayear.Octoberisthe____month.A.twelve,tenB.twelfth,tenthC.twelve,tenthD.twelfth,ten3、Thereare____peopleinPeter’sfamily.Theyliveonthe____floorintallbuilding.A.six,eighteenB.six,eighteenthC.sixth,eighteenthD.sixth,eighteen1、ThisisMrWhite’s____visi94、_____istheeasiestofall.A.LessononeB.TheLessononeC.LessonFirstD.Thefirstlesson5、Theforeignguestsstayedin____lastnight.A.Room608B.theRoom608C.the608roomD.608theroom4、_____istheeasiestofall10注：通常前面要加定冠詞the；但出現(xiàn)不定冠詞a或an時(shí)，則表示“再—”，“又—”。

We'llgooveritasecondtime．

注：通常前面要加定冠詞the；但出現(xiàn)不定冠詞a或an時(shí)，則11特別說(shuō)明：1、世紀(jì)、年代、年份、月份時(shí)，用介詞in2、某一天、星期前用介詞on3、某一天早晨、下午或晚上時(shí)，用介詞on。1、____acoldmorning，theoldmandiedlonelyinhishouse．2、Thegirlwassenttohospital____themorningofMarch20.3、Mysonwasborn_____October2010.4、Peopleareverypoor_____thefifties.

Ononinin特別說(shuō)明：1、____acoldmorning，th12分?jǐn)?shù)，小數(shù)，百分比分?jǐn)?shù)，小數(shù)，13熱門(mén)考點(diǎn)一：hundred、thousand、million、billion的考查方法1．和“of”連用，前面不能有具體的數(shù),而且這四個(gè)詞的本身必須用復(fù)數(shù)。如hundredsof數(shù)以百計(jì)的thousandsof數(shù)以千計(jì)的millionsof數(shù)以百萬(wàn)計(jì)的 billionsof數(shù)以十億計(jì)的manyhundredsofstudents.好幾百個(gè)學(xué)生2．當(dāng)它們的前面有具體的數(shù)修飾時(shí),其本身即不能用復(fù)數(shù)，不能和“of”連用。twothousandstudents兩千名學(xué)生fivehundredcars五百輛車熱門(mén)考點(diǎn)一：hundred、thousand、milli141、Bytheendoflastyear,wehadplantedaboutfive____trees.A.hundredB.hundredsC.hundredofD.hundredsof2、____booksmustbeproducedforthechildren.A.manythousandsB.manythousandsofC.manythousandofD.manythousand1、Bytheendoflastyear,we15熱門(mén)考點(diǎn)二：其它重要表達(dá)方式的考法1.在某人多少歲in+one’s+幾十的復(fù)數(shù)形式eg: Myparentsareintheirfifties.2．a(chǎn)

five-year-oldboy

an

eight-year-oldgirl3．100-meter-longbridge(100米長(zhǎng)的橋)

10metersdeep(10米深)4．ten-minutewalk=tenminutes’walk5.twomorehours=anothertwohours.熱門(mén)考點(diǎn)二：其它重要表達(dá)方式的考法16()1、Thehaswrittena___composition．A．three-hundred-wordB．three-hundred-wordsC．threehundredswordsD．threehundredsword()2、Everydaytheoldwomansitsherefor____.A.oneandhalfhourB.oneandahalfhourC.onehoursandahalfD.oneandahalfhours()3、Hebecameveryrich____.A.inhisfortyB.inthefortiesC.inhisfortiesD.intheforty()4、Maryis____girl.A.an8–year-oldsB.an8-year-oldC.an8-years-oldD.a8-year-oldADCB()1、Thehaswrittena___17()5、GuangzhouTowerisalmost_____．A．600meterhighB．600metershighC．600-meters-highD．600-meter-high()6、—Haveyougotenoughbooks?—No.Ineed____.A.tenmoreB.moretenC.tenanotherD.othertenBA()5、GuangzhouTowerisal18選擇填空。

1．Marchis____monthofayear．

A．a(chǎn)threeB．thethirdC．a(chǎn)third

2．Wewillhaveameetingat8:05____．

A．fivetoeightB．eightfiveC．eightofive

3．Eightpluseightis____.

A．sixteenB．sixty-four