(共14张PPT)
Unit 7
How much are these socks？
Section B
1a~1e
Numbers
10
11
12
13
14
ten
eleven
twelve
thirteen
fourteen
four
teen
+
Numbers
15
16
17
18
19
fifteen
sixteen
seventeen
eighteen
nineteen
Numbers
20
21
22
30
31
twenty
twenty-one
twenty-two
thirty
thirty-one
32
thirty-two
twen
ty
thir
ty
+
+
Exercise
一、填表格，记数字。
10
11
15
30
18
20
26
28
39
ten
thirteen
twelve
nineteen
sixteen
twenty-one
thirty-one
13
12
16
19
21
35
eleven
fifteen
twenty
eighteen
thirty
thirty-nine
twenty-eight
twenty-six
Exercise
1. twenty-six - twelve - nine = _______
2. sixteen ＋ eight ＋ eleven = _________
3. eighteen - seven ＋ fifteen = __________
4. thirteen＋fourteen-twenty-five = _____
5. twenty-nine - thirteen - ten = _____
6. thirty-nine - twenty - five =_________
7. twelve ＋ thirteen - fifteen= ____
8. nineteen - eleven ＋ twenty =___________
二、做数学题，学英语。
five
thirty-five
twenty-six
two
six
fourteen
ten
twenty-eight
1a
听录音并跟读。
Listen and repeat.
10
12
13
14
15
16
17
18
19
20
11
31
30
29
28
27
26
25
24
23
22
21
1b
将1a中的数字写在对应的单词后。哪几行数字的顺序不对？
Write the numbers in 1a next to the correct words. Which rows of numbers are in the wrong places
ten __ eleven __ twelve __ thirteen __ fourteen __
twenty-five __ twenty-six __ twenty-seven __ twenty-eight __ twenty-nine __
twenty __ twenty-one __ twenty-two __twenty-three __ twenty-four __
fifteen __ sixteen __ seventeen __ eighteen __ nineteen __
thirty __ thirty-one __
10
11
12
13
14
25
26
27
28
29
24
23
22
21
20
15
16
17
18
19
30
31
1c
听录音,在1a中圈出听到的数字。
10
12
13
14
15
16
17
18
19
20
11
31
30
29
28
27
26
25
24
23
22
21
Listen and circle the numbers you hear in 1a.
1d
再听一遍录音，在图中圈出凯特和妈妈谈到的物品，在凯特购买的物品上打勾。
Listen again. Circle the things in the picture that Kate and her mom talk about. Check (√) the thing Kate buys.
√
Ask and answer questions about the things in the picture above.
1e
就上图中的物品与同伴进行回答。
A: How much is the white bag
B: It’s seventeen dollars.
基数词的表达
1) one到twelve, 拼写和读音无规律可言, 只能逐一记忆。
2) thirteen到nineteen，表示“十几”，在个位数后加后缀-teen，
其中要注意thirteen, fifteen和eighteen的拼写。
3) twenty到ninety，表示“几十”，以ty结尾，但需注意twenty,
thirty, forty, fifty, eighty的拼写。
4) 21~29直到91~99，表示“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) one hundred 意为 “一百”，也可说a hundred，hundred可加
具体数字，如nine hundred (900)。
基数词的用法
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：
one student 一名学生
two boys 两名男孩
twenty apples 二十个苹果
thirty-three eggs 三十三个鸡蛋
Homework
老师可以在这里布置作业噢~
