8．He has to clean his room himself．（改為一般疑問句）
Does hehaveto clean his room himself？

分析 --他必須自己打掃房間．
--他必須自己打掃房間嗎．

解答 答案：Does；have．考查一般疑問句．根據(jù)has第三人稱單數(shù)，可知是一般現(xiàn)在時態(tài)，主語是he第三人稱單數(shù)，含有實義動詞，變一般疑問句在句首用助動詞does，實義動詞has變原形have．答案是Does；have．

點評 一般疑問句變法，要考慮助動詞、be動詞、情態(tài)動詞等的用法，還要考慮時態(tài)、人稱、固定用法．根據(jù)語境完成試題．

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