题目内容
2.I have waited for the busfor twenty minutes..(就句子划线部分提问)How long have you waited for the bus?
分析 我等公共汽车等了20分钟了.你等公共汽车等了多久了?
解答 答案:How long.根据划线部分for twenty minutes可知,提问的是时间段,故填:How long
点评 对划线部分提问要分析划线部分在句子中的成分,即可找出恰当的特殊疑问词.
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