题目内容
19．In the past three years in the middle school，hehas changed （change） a lot，especially he is kind to others．分析 在过去的三年中，他改变了很多，特别是他对别人很好．
解答 答案：has changed 考查单词填空．根据题干中的 In the past three years 在过去的三年，是一段时间，要用现在完成时完成句子，构成是主语+have/has+过去分词，主语是he，助动词用has，change的过去分词是changed，故答案是has changed
点评 解答此题的关键是根据语境推测要填内容表达的含义，然后能理解各选项内容，有时可能没有必要细细区分每个单词的含义，仅根据句子语气就可以判断出正确答案．
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