中小学教育资源及组卷应用平台 期末专项培优 词性转换 一．词性转换（共15小题） 1．The laws have led to a reduction in fuel （consume） in the U.S. 2． （expose） to lead is known to damage brains of children. 3．Accidents on that highway are happening with increasing （frequent）. 4．When they were free from work，they invited us to local events and let us know of an interesting （compete） to watch，together with the story behind it. 5．Taking physical exercise regularly is an effective way to avoid （infect） with the flu. 6．A rescue worker risked his life saving two tourists who （trap） in the mountains for two days. 7．He lifted a rock only （drop） it on his own feet. 8．The society was set up to preserve （endanger）species from extinction. 9．By the end of last year，another new gymnasium （complete） in Beijing. 10．If they have problems with registration，Wilson is there （assist） them. 11．If the new safety system （put） to use，the accident would never have happened． 12．Along with the development of industry，people's material wealth has enriched （drama） and the lifestyle changed completely. 13．A lot of people make the （assume） that poverty only exists in the third world． 14． （lack） enthusiasm for sports，I rejected the invitation to a football game． 15．To our （relieve），he recovered his health and went back to work. （所给词的适当形式填空） 期末专项培优 词性转换 参考答案与试题解析 一．词性转换（共15小题） 1．The laws have led to a reduction in fuel consumption （consume） in the U.S. 【考点】名词词义辨析． 【答案】consumption 【分析】这些法律导致了美国燃料消耗量的减少。 【解答】答案：consumption.设空处作前面介词in的宾语，所以应该填名词，名词fuel作定语修饰consumption.故填consumption. 【点评】对于用所给词的适当形式填空，答题时要做到：A．明确所给词的词性；B．弄清所给句子的意思；C．确定空白处所需的词性D．正确写出所填的词。 2． Exposure （expose） to lead is known to damage brains of children. 【考点】名词词义辨析． 【答案】Exposure 【分析】众所周知，接触铅会损害儿童的大脑。 【解答】答案：Exposure.设空处作句子的主语，应该填名词。动词expose的名词形式是exposure"面临，遭受（危险或不快）"，根据谓语动词is known可知，应为不可数名词，因在句首，首字母大写。故填Exposure. 【点评】做单词填空题，首先要弄清所给句子的意思，分析句子结构确定空白处所需的词性，结合语境做出合乎语法和惯用法的词形变化，最后填写拼写正确的单词。 3．Accidents on that highway are happening with increasing frequency （frequent）. 【考点】名词词义辨析． 【答案】frequency 【分析】那条公路上的事故越来越频繁。 【解答】答案：frequency.所给词为形容词，空前有形容词increasing修饰，应用名词frequency作介词with的宾语，表示"频繁"，是不可数名词，故填frequency。 【点评】做单词填空题，首先要明确所给词的词性并弄清所给句子的意思，分析句子结构确定空白处所需的词性，结合语境做出合乎语法和惯用法的词形变化，最后填写拼写正确的单词。 4．When they were free from work，they invited us to local events and le ... ...
