题目内容
4.Madame Curieinventedthe x-ray machine.(发明)分析 居里夫人发明了X射线机.
解答 答案:invented
联系语境,联系常识,居里夫人是已经故去的物理学家,所以发明X射线机是过去的事情,所以此句应用一般过去时去表达;根据给出的汉语"发明",可知此词放在主语Madame Curie的后面应该为动词,指居里夫人发明了X射线机;"发明"英文表达为invent,其过去式为invented.故填写invented.
点评 此题考查单词的拼写及时态变化.做题时要联系语境准确判断出所填词的词性及时态,从而写出正确的单词.
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