Unit7SectionB1a-1eTalkaboutthepriceoftheclothes.Howmuchisthathat?It’sfivedollars.Howmuchis/are…?It’s…/They’re…$7$5$6$3$9$8teneleventwelvethirteenfourteenfour+teen→sixteenseventeennineteenfifteeneighteen10111213141518161719Numberstwentythirtytwenty-onetwenty-twothirty-one2030212231Talkaboutthepricesoftheclothes.Howmuchisthathat?It’sfivedollars.Howmuchis/are…?It’s…/They’re…$7$5$11$15$20$260到120zero1one2two3three4four5five6six7seven8eight9nine19ten11eleven12twelve你發現了什么規律?

Listenandrepeat.

10111213141516171819202122232425262728293031Chantthenumbers,clapifthenumbercontains:One:clapon1,21,31Two:clapon2,22Three:clapon3,33…ten___eleven___twelve___thirteen___fourteen___twenty-five___twenty-six___twenty-seven___twenty-eight___twenty-nine___twenty___twenty-one____twenty-two___twenty-three___twenty-four___

Writethenumbersin1anexttothecorrectwords.Whichrowsofnumbersareinthewrongplaces?1011121314252627282920212223241bfifteen___sixteen___seventeen___eighteen___nineteen___18171615303119thirty___thirty-one___13到1913thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteen你發現了什么規律?13--19的數字都以“個位數+teen”組成，其中，thirteen，fifteeneighteen需要特殊記憶20到90的整數20twenty30thirty40forty60sixty70seventy80eighty90ninety你發現了什么規律?20--90的整數都以“ty”結尾，其中，sixty，

seventy，ninety都是十位數詞直接加“ty”Listenagain.CirclethethingsinthepicturethatKateandhermomtalkabout.Check(√)thethingKatebuys.1d√Howmuchisthebluesweater?It’s15dollars.Askandanswerquestionsaboutthethingsinthepictureabove.

1e1.基數詞表達

1)one–twelve：拼寫和讀音無規律。

2)thirteen–nineteen：十幾。在個位數后加后綴-teen,注意thirteen,fifteen和eighteen。

3)twenty

–ninety：幾十。以ty結尾,注意twenty,thirty,forty,fifty,eighty。4)21~29–91~99：幾十幾。

用整十位數加個位表示,中間用連字符“-”把十位和個位連接起來。

5)onehundred：一百。也可說ahundred,可加具體數字,如ninehundred(900)。hundred要用單數。2.基數詞用法基數詞只能修飾可數名詞，要注意數詞和名詞在數上要保持一致。如：一名學生onestudent

兩名男孩twoboys

二十個蘋果twentyapples

三十三個雞蛋thirty-threeeggs1:1---12:(每個單詞單獨記憶)

2:13---19:-teen(thir-,fif-,eigh-)3:20---90:-ty(twen-,thir-,for-,fif-,eigh-)4:21---99:十位-+個位5:100---900:___h