Question

there is a shelf behind the bed 改为一般疑问句怎么改？

Answer 1

一般疑问句:
Is there a shelf behind the bed?

Answer 2

Where is the shelf

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Answer 3

Is there a shelf behind the bed？

追答

句子中有be动词，直接把be动词提到主语的前面(句子开头)。