小学英语外研剑桥版四年级上册Unit 3 Numbers课堂教学ppt课件

这是一份小学英语外研剑桥版四年级上册Unit 3 Numbers课堂教学ppt课件，文件包含第2课时Parts34PAIRWORKpptx、Unit33Listenandsaymp3、Unit34Listenandsaytherhymemp3、minusmp3、plusmp3、Numbersongmp4等6份课件配套教学资源，其中PPT共19页， 欢迎下载使用。

3 Listen and say.
12twelve20twenty13thirteen30thirty14furteen40frty15fifteen50fifty16sixteen60sixty17seventeen70seventy18eighteen80eighty19nineteen90ninety
Cmplete the table
netwthreefurfivesixseveneightnine
eleventwelvethirteenfurteenfifteensixteenseventeeneighteennineteen
twenty-netwenty-twtwenty-threetwenty-furtwenty-fivetwenty-sixtwenty-seventwenty-eighttwenty-nine
拼音和读写没有什么相似之处，无规律可循
Let’s cnclude
在相应的个数后加-teen（13, 15, 18较特殊）
在相应的个数后加-ty（20, 30, 40, 50, 80较特殊）
整十数 + 连字符 +个位数
4 Listen and say the rhyme.
One, tw, three, fur,Five, six, seven,Eight, nine, ten,And nw eleven,Twelve is tw plus ten,Nw let’s start again.
Let’s practice
Twelve is tw plus ten.
Ten is twelve minus tw.
10 = 12 - 2
Let’s learn
12 = 2 + 10
D the sums in English.
Eighteen plus frty-eight is sixty-six.
Thirty-seven plus frty-three is eighty.
Fifty-tw plus twenty-five is seventy-seven.
Nineteen plus seventeen is thirty-six.
Frty-nine plus frty-nine is ninety-eight.
Check and read
Ninety-nine minus twenty-six is seventy-three.
Seventy-six minus fifty-seven is nineteen.
Eighty-tw minus thirty-tw is fifty.
Twenty-fur minus five is nineteen.
Ninety minus thirty-eight is fifty-tw.
十八加四十八等于多少？
九十九减去二十六等于多少？
Ask and answer
What is eighteen plus frty-eight?
What is ninety-nine minus twenty-six?
It’s sixty-six.
It’s seventy-three.
询问A加B或A减B等于多少：问句：What is A plus/minus B?答语：It’s +基数词.
What is … plus …?
What is … minus …?