(共27张PPT)
Unit 4 When is the art show
Part B Let's learn
Let’s sing
When is Chenjie’s birthday
Her birthday is on ….
A:
B:
What about Wu Binbin
His birthday is on ….
This is my family.
Let me tell you!
First, please meet my family!
Nice to meet you!
Nice to meet you ,too.
Wu Binbin, when is _________ birthday
It’s on ______ ___.
October
12th
Grandpa’s
twelfth
(第十二)
twelve (十二)
Wu Binbin, when is your _________ birthday
Grandma’s
twentieth
(第二十)
It’s on April 20th.
twenty (二十)
Binbin, when is your ______ birthday
It’s on ___ ___.
twentieth
twenty
thirty
thirtieth
(第三十)
fortieth
forty
fifty
fiftieth
sixty
sixtieth
seventieth
seventieth
ninetieth
整数数字
变序数，
先变y为ie，
再加th。
A: When is your ____________
B: It’s on ____________.
November 30th
Dad’s birthday
A: When is your ____________
B: It’s on ____________.
February 23rd
Mum’s birthday
twenty-third
twenty-three
twenty-third
twenty-three
twenty-one
twenty-first
只要将后面的尾数，
变为相应的序数。
_______________
________________.
It’s on August 21st
When is my birthday
Let’s Learn
Wu Binbin’s birthday is on August 21st.
Grandpa’s birthday is on October 12th.
Grandma’s birthday is on April 20th.
Dad’s birthday is on November 30th.
Mum’s birthday is on February 23rd.
forty-second
twenty-fourth
fifty-third
sixty-first
Let’s say!
twenty-second
thirty-first
forty-second
Try to write!
Sum-up
序数词
twelfth
twentieth
twenty-first
twenty-third
thirtieth
简写形式
12th
20th
21st
23rd
30th
注：
序数词的简写形式由阿拉伯数字加上序数词的最后两个字母构成
用英语表达日期时，一般由“月份+序数词的简写形式”来表示，如6月21日写成June 21st,读作June (the) 21st
When is your birthday
My birthday is on March 21st.
Talk, circle and write!
21st
Talk and write!
12th
13th
14th
15th
16th
17th
18th
19th
20th
21st
22nd
23rd
24th
25th
26th
27th
28th
29th
30th
31st
1st
2nd
3rd
4th
基数词——序数词变化规则
1.序数词1-19：除第一，第二，第三，第五，第八，第九，第十二变化不规则外，其余均在基数词后加上-th
2.整十数的序数词的构成方法，是将整十数基数词的词尾-y变成-i再加eth
3.几十几的序数词，只是把个位数变成相应的序数词，整十不变
课堂小结
Homework
Read the text for 15 minutes and try to remember the new words and sentences.
（熟读课文15分钟，记忆新学词汇和句子。）
2. Write your family members’ birthdays.
（写一写自己的家人的生日。）
