由划线部分look after himself可知,该题是对动词提问,问做什么,因此可确定特殊疑问词为what。
第二步,将句子改为一般疑问句。将划线部分遮住不看,谓语动词缺失的部分用do (因为原句look after是动词原形) 代替,句子变成Doctor Lee asked Kangkang to do,将其改为一般疑问句为Did doctor Lee ask Kangkang to do? 最后,将这两步结合在一起 What did doctor Lee ask Kangkang to do? 即为本题的答案。
例4:Kate waslearning Englishat this time yesterday.
第一步,确定特殊疑问词。