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wide mouth
short hair
long neck
round face
has
has
has
have
拓展练习一
把下列句子变为一般疑问句
1.They have a dog.
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2.Tom and Mike have a nice mum.
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3.Tom has a nice mum.
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4.He has a sister.
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含have的句子变一般疑问句，只需在句首加do。
含has的句子变一般疑问句，却需在句首加does。
Do they have a dog?
Do Tom and Mike have a nice mum?
Does Tom have a nice mum?
Does he have a sister?
拓展训练二
对下列句子做出肯定和否定回答：
1.Do they have a new classroom?
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2.Does he have long hair?