一般疑问句
一、把be动词（am is are）和情态动词(can, may, must...)放到句首，其它照写。遇I/we-you, my-your. some-any. 句号变成问号（？）
例如：陈述句: They are in the park. He can play the guitar..
一般疑问句: Are they in the park? Can he play the guitar?
把下列句子变成一般疑问句
1. I am listening to music.
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2. Mike is a student.
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3. Sarah can clean the classroom.
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4. They are in the zoo.
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5. There are some flowers in the vase.
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6.This is my sister.
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7.We are sweeping the floor.
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二、借助助动词do/does,第三人称单数用does,其余人称用do，放到句首，其他照写。特别记住：前面用does,后面的动词一定还原成原形。遇I/we-you, my-your, some-any. 句号变成问号（？）
例如：陈述句: I like the ducks. He likes the dogs.
一般疑问句：Do you like the ducks? Does he like the dogs?
把下列句子改为一般疑问句。
1. We need some masks.
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2. They like making the puppet.