Unit7SectionB1a1e课件人教版英语七年级上册

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你发现了什么规律?

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你发现了什么规律?13--19的数字都以“个位数+teen”组成，其中，thirteen，fifteeneighteen需要特殊记忆20到90的整数20twenty30thirty40forty60sixty70seventy80eighty90ninety你发现了什么规律?20--90的整数都以“ty”结尾，其中，sixty，

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

1e1.基数词表达

1)one–twelve：拼写和读音无规律。

2)thirteen–nineteen：十几。在个位数后加后缀-teen,注意thirteen,fifteen和eighteen。

3)twenty

–ninety：几十。以ty结尾,注意twenty,thirty,forty,fifty,eighty。4)21~29–91~99：几十几。

用整十位数加个位表示,中间用连字符“-”把十位和个位连接起来。

5)onehundred：一百。也可说ahundred,可加具体数字,如ninehundred(900)。hundred要用单数。2.基数词用法基数词只能修饰可数名词，要注意数词和名词在数上要保持一致。如：一名学生onestudent

两名男孩twoboys

二十个苹果twentyapples

三十三个鸡蛋thirty-threeeggs1:1---12:(每个单词单独记忆)

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