最新人教版四年级英语(下)pppt课件
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(twenty-second)
.
序数词缩写: first, second, third 通常可缩写为1st, 2nd, 3rd。 凡是以th结尾的序数词可缩写为“基数词+th”。如:4th, 5th, 9th, 11th, 60th, 128th等。 第二十一 twenty-first 第二十二twenty-second 第二十三
重点句型讲解
Where's the library? where 意为“在哪里”，用来引导特殊疑问句， 表示对地点的询问。 “Where + is / are +主语？” 表示“....在哪里？” Where are the keys? 钥匙在哪里？
注意：where is =where's where are =where're
.
.
重点句型讲解
Is this the teachers' office? 由be动词is引导的一般疑问句，意为“这是....吗？” 用来确认近处物体的名称。 其结构为：Is this + 物品名称？ 肯定回答为：Yes,it is.(是的。) 否定回答为：No,it isn't.(不，不是。) Is this your pen? 这是你的钢笔吗？ Yes,it is.是的。/ No,it isn't. 不，不是。
Leabharlann Baidu
Is this the teachers' office?
It's next to the art room.
No,it isn't.It's the computer room.
Do you have an art room?
Oh,no!That's my library!.
Yes.It's on the second floor.
This way ,please.
.
重点句型讲解
How many students are there in your class? how many 意为“多少”，用来询问可数名词的 数量 How many apples are there on the tree ? 树上有多少个苹果？ 注意：当询问不可数名词的数量时要用 how much How much money do you have? 你有多少钱？
.
Let' do
.
.
.
.
.
.
句型练习：
.
.
.
.
.
.
.
序数词变化规律
基变序有规律 一，二，三，特殊记，词尾各是t , d , d . （one→first， two→second， three→third） 八去t , 九去e , 五和十二很容易，f来把ve替， 遇到整几十，改y为ie，末尾仍加th （eight→eighth，nine→ninth，five→fifth， twelve→twelfth，twenty→twentieth， thirty→thirtieth） 若是遇到几十几，只变各位就可以。
Cool! Do you have a music room?
Yes,we do.It's on the first floor.
.
重点句型讲解
Do you have a library? 由助动词do 引导的一般疑问句，do 在句中没有 任何实际意义。 结构为Do you have +物品名称？ 意为“你/你们有....吗？” 肯定回答：Yes,I /we do. 否定回答：No,I /we don't. Do you have a garden? 你们有花园吗？ Yes,I /we do. 是的，我们有。 No,I /we don't. 不，我们没有。
.
third floor [θɜːd flɔ:]
second floor [ˈsekənd flɔ:]
first floor [fə:st flɔ:]
.
teachers' office ['tɪtʃɚs 'ɒfɪs]
.
library [ˈlaɪbrərɪ]
.
playground ['pleɪgraʊnd]
.
Where's the library?
It's on the first floor.
Is it next to the teachers' office?
teachers' office
Yes,it is. second floor
library .
first floor
This is my school.
twenty-third 第二十 三十 四十 五十 六十 七十 八十 九十 里的y, 首先 改为ie再加th。
twentieth thirtieth fortieth fiftieth
sixtieth seventieth eightieth ninetieth 如果整十后面带有个位数，只需把个位数变为序数词即 可twenty-fifth thirty-sixth forty-seventh fifty-eighth 第一百one hundredth 第一千one thousandth 第一百二十一one hundred and twenty-first 第一千三百二十一one thous.and and three hundred
.
Chen Jie:Welcome to our school! This is my classroom.
Visitor :It's so big.How many students are there in your class?
Chen Jie:Forty-five students. Visitor :Is that the computer room? Chen Jie:No,it isn't.It's the teachers' office. Visitor :Do you have a library? Chen Jie:Yes,we do.It's on the second floor.
.
computer room [kəm'pjuːtə ruːm]
.
art room [ɑːt ruːm]
.
music room ['mjuːzɪk ruːm]
.
homework ['həʊmwɜːk]
.
class [klɑːs]
.
方位介词
.
.
Look ！That's the playground. Where's the library?
.
序数词缩写: first, second, third 通常可缩写为1st, 2nd, 3rd。 凡是以th结尾的序数词可缩写为“基数词+th”。如:4th, 5th, 9th, 11th, 60th, 128th等。 第二十一 twenty-first 第二十二twenty-second 第二十三
重点句型讲解
Where's the library? where 意为“在哪里”，用来引导特殊疑问句， 表示对地点的询问。 “Where + is / are +主语？” 表示“....在哪里？” Where are the keys? 钥匙在哪里？
注意：where is =where's where are =where're
.
.
重点句型讲解
Is this the teachers' office? 由be动词is引导的一般疑问句，意为“这是....吗？” 用来确认近处物体的名称。 其结构为：Is this + 物品名称？ 肯定回答为：Yes,it is.(是的。) 否定回答为：No,it isn't.(不，不是。) Is this your pen? 这是你的钢笔吗？ Yes,it is.是的。/ No,it isn't. 不，不是。
Leabharlann Baidu
Is this the teachers' office?
It's next to the art room.
No,it isn't.It's the computer room.
Do you have an art room?
Oh,no!That's my library!.
Yes.It's on the second floor.
This way ,please.
.
重点句型讲解
How many students are there in your class? how many 意为“多少”，用来询问可数名词的 数量 How many apples are there on the tree ? 树上有多少个苹果？ 注意：当询问不可数名词的数量时要用 how much How much money do you have? 你有多少钱？
.
Let' do
.
.
.
.
.
.
句型练习：
.
.
.
.
.
.
.
序数词变化规律
基变序有规律 一，二，三，特殊记，词尾各是t , d , d . （one→first， two→second， three→third） 八去t , 九去e , 五和十二很容易，f来把ve替， 遇到整几十，改y为ie，末尾仍加th （eight→eighth，nine→ninth，five→fifth， twelve→twelfth，twenty→twentieth， thirty→thirtieth） 若是遇到几十几，只变各位就可以。
Cool! Do you have a music room?
Yes,we do.It's on the first floor.
.
重点句型讲解
Do you have a library? 由助动词do 引导的一般疑问句，do 在句中没有 任何实际意义。 结构为Do you have +物品名称？ 意为“你/你们有....吗？” 肯定回答：Yes,I /we do. 否定回答：No,I /we don't. Do you have a garden? 你们有花园吗？ Yes,I /we do. 是的，我们有。 No,I /we don't. 不，我们没有。
.
third floor [θɜːd flɔ:]
second floor [ˈsekənd flɔ:]
first floor [fə:st flɔ:]
.
teachers' office ['tɪtʃɚs 'ɒfɪs]
.
library [ˈlaɪbrərɪ]
.
playground ['pleɪgraʊnd]
.
Where's the library?
It's on the first floor.
Is it next to the teachers' office?
teachers' office
Yes,it is. second floor
library .
first floor
This is my school.
twenty-third 第二十 三十 四十 五十 六十 七十 八十 九十 里的y, 首先 改为ie再加th。
twentieth thirtieth fortieth fiftieth
sixtieth seventieth eightieth ninetieth 如果整十后面带有个位数，只需把个位数变为序数词即 可twenty-fifth thirty-sixth forty-seventh fifty-eighth 第一百one hundredth 第一千one thousandth 第一百二十一one hundred and twenty-first 第一千三百二十一one thous.and and three hundred
.
Chen Jie:Welcome to our school! This is my classroom.
Visitor :It's so big.How many students are there in your class?
Chen Jie:Forty-five students. Visitor :Is that the computer room? Chen Jie:No,it isn't.It's the teachers' office. Visitor :Do you have a library? Chen Jie:Yes,we do.It's on the second floor.
.
computer room [kəm'pjuːtə ruːm]
.
art room [ɑːt ruːm]
.
music room ['mjuːzɪk ruːm]
.
homework ['həʊmwɜːk]
.
class [klɑːs]
.
方位介词
.
.
Look ！That's the playground. Where's the library?