文档介绍：Unit 2 否定句
This isn’t a pen. It’s a pencil.
This isn’t a cat . It’s a rabbit.
That isn’t a coat. It’s a shirt.
That isn’t a jeep. It’s a car.
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isn’t = is not
This isn’t a pear. = This is not a pear.
This isn’t a boy. = This is not a boy.
This isn’t a table. = This is not a table.
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肯定句和否定句
口诀:
肯定句变否定句,找到连系动词是(is,are),在它后面加“not”,这就变成了否定句!
肯定句: This is a flower.
否定句: This is not a flower.
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Practice (Read in pairs)
1. This isn’t a TV. It’s puter.
2. That isn’t a school. It’s a house.
3. This isn’t a desk. It’s a bed.
4. That isn’t a shirt. It’s a suit.
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肯定句与一般疑问句
口诀:
肯定句变一般疑问句,找到连系动词是(is, are),把它放在主语前,大写第一字母要牢记,句尾一定加问号,读成升调你满意。
肯定句: This is a coat .
一般疑问句: Is this a coat ?
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Ask and answer.
1. Is this a table ?
No, it isn’t a table. It’s a sofa.
2. Is this a lion ?
No, it isn’t a lion. It’s a tiger.
3. Is this an apple ?
No, it isn’t an apple. It’s an orange.
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Practice
Is this a/an …?
1 2 3 4
5 6 7 8
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These aren’t apples.
These are strawberries.
These aren