The invention of smart phones changed the world in many ways．Did the invention of smart phoneschange the world in many ways? 题目和参考答案——青夏教育精英家教网—

题目内容

19．The invention of smart phones changed the world in many ways．（改为一般疑问句）
Did the invention of smart phoneschange the world in many ways？

分析 --智能手机的发明在许多方面改变了世界．
--智能手机的发明在很多方面改变了世界吗？

解答答案：Did；change．考查一般疑问句．由changed过去式，可知，原句是一般过去时态，含有实义动词，变一般疑问句在句首用助动词did，实义动词变原形change．答案是Did；change．

点评一般疑问句变法，要考虑助动词、be动词、情态动词等的用法，还要考虑时态、人称、固定用法．根据语境完成试题．

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