题目内容
10．People were extremelyworriedwhen the nuclear pollution（核辐射） took place．（worry）分析 当核辐射发生的时候，人们显得极其担心．
解答 答案worried 根据"People were extremely"可知要用worried来修饰人，worried意为"感到焦虑的"．故填worried．
点评 本题考查学生对ing形容词和ed形容词的理解和运用．
原则上说，由-ing分词转化来的形容词具有主动的含义；由-ed分词转化来的形容词具有被动的含义．
为记忆方便，可以理解为：-ing形容词 指人或事物本身具有这样的特性，如：an interesting book 一本有趣的书，an interesting man 一个有趣的人，an exciting game 一个兴奋的游戏；-ed形容词 被影响而变成…的，如：an excited man （受影响而）兴奋的人 a worried man （受影响而）担忧的人．
根据此题可知，"当核辐射发生的时候，人们显得极其担心"，可见，人们是"受影响"而"担忧"，因而用应使用的worry的正确形式是worried．
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