Unit7SectionB1a-1c课件人教版英语七年级上册

thirty thirty-one …
forty
forty-one …
fifty
fifty-one …
sixty
sixty-one …
seventy seventy-one …
eighty eighty-one …
ninety ninety-one …
掌握基数词的拼写。
twenty-nine thirty-nine forty-nine fifty-nine sixty-nine seventy-nine eighty-nine ninety-nine
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
Twenty, thirty, forty, fifty, eighty
Twenty-one, thirty-two, fortypeat.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
基数词的表达法
分类
1-12
13-19
20-90 整十数 1-99 非整十数
表达法
示例
拼音和读写没有什么相似之处， 无规律可循
One, two, three
在相应的个数后加-teen（13, 15, Thirteen, fourteen, fifteen,
18较特殊）
sixteen, seventeen, eighteen
twenty twenty-one twenty-two twenty-three twenty-four
twenty-five twenty-six twenty-seven twenty-eight twenty-nine
thirty
thirty-one
Learn these numbers and find out the rules:
减 minus 除 … divide by…
Look and answer quickly.
How much are the black shoes? How much is the blue sweater? How much are these trousers? How much is the T-shirt? How much is the green sweater?
Write the numbers in 1a next to the correct
1b
words. Which rows wrong places?
of
numbers
are
in
the
ten__1_0_ eleven__1_1_ twelve__1_2_ thirteen___1_3
fourteen__1_4_
Mom: Oh, look! I like that blue sweater. How much is it? Kate: Fifteen dollars. Oh, I like these socks. Mom: Oh, no. I don’t like red. Kate: Do you like this T-shirt? Mom: Mmm, yes, I do, but it’s eleven dollars. Kate: Oh. How much is the green sweater?
— How much is this…?
— It’s… dollars.
($7-$12)
— How much are these…?
($15-$20)
— They’re…dollars.
($1-$5)
($10- $15)
($20-$25)
Can you count the numbers?
ten eleven twelve thirteen fourteen fifteen
Mom: It’s twenty dollars. But you have a green sweater. Kate: Mmm. Mom: Oh, do you like these trousers? Kate: Oh, yes. How much are they? Mom: Only sixteen dollars. Kate: OK, I’ll take them.
5. Sixty-two minus ten is __f_if_t_y_-t_w_o__. 6. Multiply five by nine is __f_o_r_t_y_-f_iv_e_. 7. Eight divided by two is ____f_o_u_r____.
计算： 加 and / plus 乘 multiply… by…
seventeen ____
nineteen_1_6__
thirty____ 17
twenty-nine__2_9_ twenty-two ____
22 fifteen ____
eighteen15____
thirty-one__1_8_
19
30
31
1c Listen and circle the numbers you hear
十 十一 十二 十三 十四 十五
sixteen seventeen eighteen nineteen twenty thirty
十六 十七 十八 十九 二十 三十
Can you read them? ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
1d Listen again. Circle the things in the picture that Kate and her mom talk about. Check (√) the thing Kate buys.
√
Read the conversation after the tape.
twenty-five__2_5_
twenty-six___2_6
twenty-seven_2_7__ twenty-eight__2_8_
twenty____ 20
twenty-three____ sixteen ____ 23
twenty-one ____ 21
twenty-four____ 24
Unit 7 How much are these socks?
Section B 1a-1e
Guess the price
You only have 3 guesses.
— How much is this…? — It’s…dollars.
($2-$8)
— It’s $ 3. — Please up. — It’s $ 7. — Please down. — It’s $ 4. — You are great.
in 1a.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Can you deal with these math problems?
(小组竞赛：你能做出这些数学题吗?)
1. One and two is ___t_h_re_e__. 2. Eleven and twenty-four is _th_i_r_ty_-_f_iv_e_. 3. Forty-five plus five is ___fi_ft_y__. 4. Eight minus three is ___f_iv_e__.
➢Summary
1.Say the numbers in English: 11,12,13,14,15,16,17,18,19,20,30,40,50,60... 2.What do you see?
eighteen kids
one two three four five six seven eight nine ten eleven twelve
thirteen fourteen fifteen sixteen seventeen eighteen nineteen hundred
twenty twenty-one …