Unit 7 How much are these socks? SectionB（1a-1e）优质课课件（20张PPT）

SectionB (1a–1e)
学习目标；
1.能够掌握英语数字ten ~ thirty-one的表达方式。
2.听懂有关谈论物品价格的对话，并完成听力任务
3.继续练习“询问价格”， 并学习运用数字ten~thirty-one来表达价钱。
1a
10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31
Row 1: ten___ eleven___ twelve___ thirteen___
fourteen___
Row 2: twenty-five____ twenty-six_____ twenty-seven___
twenty-eight____ twenty-nine___
Row 3: twenty____ twenty-one____ twenty-two___
twenty-three___ twenty-four____
Row 4: fifteen______ sixteen______ seventeen______
eighteen_______ nineteen_____
Row 5: thirty____ thirty-one_______
10
11
12
13
14
25
26
27
28
29
20
21
22
23
24
15
16
17
18
19
30
31
1b
Which two rows of numbers are in the wrong places?
哪两行数字在错误的位置？
10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31
$10
$11
$15
$14
$13
$12
$21
$16
$20
$19
$18
$17
$29
$30
$31
How much is this…? It’s…
How much are these…? They’re…
1c
Kate’s mom
Kate
10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31
What clothes do Kate and her mom talk about? Circle.
What does Kate buy at last? Check ( ).
1d
Listen again, and complete the conversation.
Mom: Oh, look! I like that blue sweater. _____ _____ is it?
Kate: _______ dollars. Oh, I like these _____.
Mom: Oh, no. I don’t like ___.
Kate: Do you like this ______?
Mom: Mmm, yes. I do, but it’s ______ dollars.
Kate: Oh. How much is the _____ _______?
Mom: It’s ______ dollars. But you have a green sweater.
Kate: Mmm.
Mom: Oh, do you like these _______?
Kate: Oh, yes. How much ____ ____?
Mom: Only _______ dollars.
Kate: OK, ____________.
much
red
How
Fifteen
socks
T-shirt
eleven
green
sweater
twenty
trousers
are
they
sixteen
I’ll take them
补全对话
Clerk: I help you?
Mom: Yes, . I a pair of pants for my daughter.
Clerk: What she like?
Mom: Blue.
Clerk: What this pair?
Mom: Oh, are they?
Clerk: 25 dollars.
Mom: Can it be cheaper?
Clerk: Sorry, I ______.
Mom: OK, I’ll ________ it. Here is the________. Thank you.
Clerk: ______ ______ _______.
Can
please
want
color does
about
how much
Exercise
can’t
take
money
You are welcome

下面把100以内的基数词分为四类。
1、第一类： one?一 two?二 three?三 four?四 five?五 six?六 seven?七 eight?八 nine?九 ten?十 eleven?十一 twelve?十二 这一类共计十二个单词，在结构上与其他的基数词相比较是特殊的，就象不规则的动词一样，要求逐个的硬背下来，这对学好其他的基数词和序数词都是及其重要的。
拓展
基数词

2、第二类： thirteen?十三 fourteen?十四
fifteen?十五 sixteen?十六 seventeen?十七 eighteen?十八 nineteen?十九 这一类基数词共有七个。它们在结构上有两个特点：一是在发音方面都有两个重音；二是在拼法上都有后缀-teen。除了thirteen和fifteen之外，都是纯粹地在另一个基数词的后面加上后缀-teen。但要注意eighteen的拼法，eight本身有t字母，因此只加-een。
拓展

3、第三类： twenty?二十 thirty?三十 forty?四十 fifty?五十 sixty?六十 seventy?七十 eighty?八十 ninety?九十 这类基数词共有八个。都是十位的整数，均以后缀-ty结尾。其中sixty、seventy、eighty、ninety基本上是在相应的基数词后面加上后缀-ty。但要注意eighty的拼法，eight本身有t字母，因此只加-y。
拓展

4、第四类： 这一类和很简单，可以看成是一种合成词。其结构方式是：用十位整数加上个位整数，其间用连字符号“-”连接，表示“几十几”。这类基数词的变化都是规则的。如： twenty-one?二十一 forty-six?四十六 seventy-eight?七十八 ninety-five?九十五
拓展
【拓展】　
基数词记忆规则歌诀:
基数词不难记,找出规律很容易:
零至十二形各异,加上-teen为十几,
thirteen,fifteen看仔细,eighteen只有一个t;
twenty却是很奇怪,forty本身也不乖,
eighty一起搞例外,跟着也把规则坏;
十位后面是个位,表示数字“几十几”。
(小组竞赛: 你能做出这些数学题吗?)
1. One and two is ________.
2. Eleven and twenty-four is _________.
3. Forty-five plus five is _______.
4. Eight minus three is _______.
5. Sixty-two minus ten is __________.
three
thirty-five
fifty
five
Can you deal with these math problems?
fifty-two