【题目】The boy is on the slide. (对划线部分提问)
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【答案】Where's the boy?
【解析】
句意:男孩在滑梯上。对on the slide提问,用疑问词where,系词is放在疑问词后面,首字母大写,句末加问号。故答案为Where's the boy?

【题目】The boy is on the slide. (对划线部分提问)
_________________________________________
【答案】Where's the boy?
【解析】
句意:男孩在滑梯上。对on the slide提问,用疑问词where,系词is放在疑问词后面,首字母大写,句末加问号。故答案为Where's the boy?