11．他花了很長時間致力于研究如何阻止學(xué)生沉迷于電腦游戲．
Hespent a long time working on researching how to stop students from falling indulged in computer games．

分析 spent a long time working on researching how to stop students from falling indulged

解答 答案：spent a long time working on researching how to stop students from falling indulged．
首先通過中英文句子的比對，可知英文句子中缺少""花了很長時間致力于研究如何阻止學(xué)生沉迷于的表達(dá)．句式"花費很長時間做某事"的英文表達(dá)是：spend a lot of time doing sth．，"研究如何阻止學(xué)生沉迷于"用research how to stop students from falling indulged．本題中，句子表述的是過去的事情，所以spend用過去式，故答案為：spent a long time working on researching how to stop students from falling indulged

點評 做這類題型，首先根據(jù)所給漢語明確句子所要考查的單詞或短語的拼寫，再結(jié)合相關(guān)語法知識對單詞或短語做出形式上的變化．

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