there is a fax machine in the office.改为一般疑问句i need to buy some apples.改为否定句

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there is a fax machine in the office.改为一般疑问句i need to buy some apples.改为否定句
there is a fax machine in the office.改为一般疑问句
i need to buy some apples.改为否定句

there is a fax machine in the office.改为一般疑问句i need to buy some apples.改为否定句
Is there anyone in the teacher's office ? Is there anyone in 1.将陈述句变为一般疑问句时,如句中有be 动词(am is are …)时,

Is there a fax machine in the office?

I don't need to buy some apples.

Is there a fax machine in the office? 有be动词陈述句改为一般疑问句时,把be动词提前
I don't need to buy some apples. 有动词的疑问句改为否定句时,在动词前加上don't或者doesn't