英语基数词表达（课件）人教PEP版英语六年级下册

Grammar基数词145121623401001231234Grammar序数词表示

先后的数词，即第几。101st22nd12th3rd9th5th1st90th顺序定义GrammarNotes1基数词序数词onefirsttwosecondthreethird123特殊记，词尾各是“t,d,d”1/2/3序数词PracticesecondthirdfirstGrammarNotes2基数词序数词fourfourthtententheleveneleventh4-19序数词nineteennineteenthth+=th+=th+=th+=4-19：基数词直接+thPracticePk:写出对应的序数词2mins____________fourth12____________fiveth3____________nineth4fifthninth____________eighttheigh5____________tenth6__________________twelvethtwelfGrammarNotes2基数词序数词fififtheighteighthninninth4-19序数词特殊规律tweltwelfthth+=th+=th+=th+=八去”t”,九减”e”,“f”来把”ve”替 fveeveGrammarNotes3基数词序数词twenttwentieth20-90整十th+=20-90整十：y变ie再加thyiefortfortiethth+=yiefiftfiftiethth+=yieeighteightiethth+=yieYes/Notwentyththirtiethfourtiethfiftietheighttiethninetieth

20th

30th

40th

50th

80th

90th

twentiethfortietheightiethGrammarNotes4基数词序数词twenty-onetwenty-first20-90非整十的序数词20-90非整十：十位数的基数词-个位的数序数词twenty-twotwenty-secondtwenty-threetwenty-thirdtwenty-fivetwenty-fifthGrammar背口诀，赢积分

注意：序数词前面须加定冠词the基变序，有规律；一二三，特殊记；词尾各是”t,d,d”;first,second,thirdth四上起

fourth八去”t”,九减”e”eighth,ninth“f”来把”ve”替fifth,twelfth若是遇到整十数，“y”变”ie”;twentieth若是遇到几十几，只变个位thirty-firstPracticeB.单项选择题。()

1.Whichnumberiswrong?A.

NinetyB.

NinteenC.

NinthD.

Nineteenth()

2.

There

are_____students

in

our

school.

A.four-hundredandforty-fiveB.

fourhundredandforty-fiveC.

fourhundredsandforty-fiveD.

fourhundredandfortyfive()

3.Tuesday

is

the

__________

day

of

a

week

in

English.

A.

firstB.

secondC.

thirdD.

fourth()

4.

There

are_____monthsinayear.Septemberisthe_________monthoftheyear.

A.twelv