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.
(twenty-second)
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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
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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。
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computer room [kəm'pjuːtə ruːm]
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art room [ɑːt ruːm]
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music room ['mjuːzɪk ruːm]
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homework ['həʊmwɜːk]
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class [klɑːs]
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方位介词
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Look ！That's the playground. Where's the library?
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Let' do
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句型练习：
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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。
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 ห้องสมุดไป่ตู้s =where's where are =where're
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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.
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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.
Cool! Do you have a music room?
Yes,we do.It's on the first floor.
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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。
This way ,please.
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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？
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
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third floor [θɜːd flɔ:]
second floor [ˈsekənd flɔ:]
first floor [fə:st flɔ:]
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teachers' office ['tɪtʃɚs 'ɒfɪs]
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library [ˈlaɪbrərɪ]
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playground ['pleɪgraʊnd]