16．She has to wear school uniforms on weekdays．（一般疑問句）
Does shehavetowear school uniforms on weekdays？

分析 --她平日必須穿校服．
--她平日必須穿校服嗎？

解答 答案：Does；have to．考查一般疑問句．根據(jù)on weekdays平日、工作日，可知是一般現(xiàn)在時(shí)態(tài)，主語是she第三人稱單數(shù)，含有實(shí)義動(dòng)詞has，變一般疑問句用助動(dòng)詞does，實(shí)義動(dòng)詞變?cè)蝖ave．答案是Does；have to．

點(diǎn)評(píng) 一般疑問句變法，要考慮助動(dòng)詞、be動(dòng)詞、情態(tài)動(dòng)詞等的用法，還要考慮時(shí)態(tài)、人稱、固定用法．根據(jù)語境完成試題．

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