She ate an ice-cream yesterday.改为一般疑问句

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She ate an ice-cream yesterday.改为一般疑问句
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She ate an ice-cream yesterday.改为一般疑问句
She ate an ice-cream yesterday.改为一般疑问句

She ate an ice-cream yesterday.改为一般疑问句
正确答案:Did she eat an ice-cream yesterday?
解析:不含be的实义动词改为一般疑问句时就提前助动词,一般过去时提前did,并注意把后边的动词还原.

Did she eat an ice-cream yesterday?