人教版高中英語必修一《Sports and Fitness》PPT教學課件，共28頁。
Lead-in
Compare the following sentences and find out what kind of sentence structures they are.
Everything seems all right now, doesn't it?
This is important, isn't it?
Give me some cigarettes, will/won't you?
Practise in pairs
Use the tag questions to role-play one of the situations below.
The Sports Day is coming soon, isn't it?
Yes, it is. They need some volunteers, don't they?
Yes, they do…
Learn about the tag questions
Tag Questions(反意疑問句)
反意疑問句又叫附加疑問句，是在陳述句后，對陳述句所敘述的事實提出的疑問。其基本結構有兩種：
一是“肯定陳述句＋簡略否定問句”；
二是“否定陳述句＋簡略肯定問句”或“祈使句部分（肯定）+疑問部分（肯定）”。
一、附加疑問句的回答
反意疑問句后一部分的主謂與前一部分的主謂要保持人稱及助動詞等方面的一致。這種疑問句的回答要根據事實，肯定的用“Yes”。否定的用“No,”。
It looks like rain, doesn't it?
He doesn't need to work so late, does he?
二、回答附加疑問句要注意的問題
前一部分是一個陳述句，后一部分是一個簡單的問句，完成后一部分簡單問句時，要根據前面陳述句的動詞時態和人稱來選擇適當的助動詞進行提問，前后兩部分的人稱和動詞時態要保持一致，如果前一部分用肯定式，后一部分一般用否定式；反之，前一部分為否定式，后一部分要用肯定式，即“前肯定后否定，前否定后肯定”。
三、反意疑問句的幾種特殊情況
1. 當陳述部分的主語是I，而句子又是用來征詢對方的意見時，附加疑問句中的主語用you。
I find English very interesting, don't you?
I don't like that film, do you?
2. 當陳述部分的主語是everybody, everyone, someone, nobody, no one, somebody等合成代詞時，附加疑問句中的主語通常用they。但亦可用he，尤其是nobody, no one等作主語，具有表示否定意義時。
Somebody phoned while I was out, didn't they?
Everyone enjoyed the party, didn't they?
Nobody wants to go there, does he?
3. 當陳述部分的主語是不定代詞everything, nothing, anything, something時，附加疑問句中的主語一般用it，不用they。
Everything seems all right now, doesn't it?
Nothing is kept in good order, is it?
Something must be done to stop pollution, isn't it?
4. 當陳述部分的主語是指示代詞this, that或these, those時，附加疑問句中的主語分別用it和they。
This is important, isn't it?
That isn't correct, is it?
These are your friends Tom and Jack, aren't they?
5. 如果陳述部分是以代詞one作主語，附加疑問句中的主語在正式場合用one，非正式場合用you, 在美國英語中，在非正式場合還可以用he。
One can't be too careful, can one?( 或can you?)
One should do his duty, shouldn't he?
6. 如果陳述部分用I'm…結構，附加疑問部分一般用aren't I。
I am strong and healthy, aren't I?
7. 當陳述句為there be結構時，附加疑問句中的主語也用there。
There's no help for it, is there?
There's something wrong, isn't there?
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