题目内容
1.Coal has beenreplaced(代替) by gas in some big cities.分析 在一些大城市里,煤炭已经被天然气所代替了.
解答 答案:replaced
由于句中的谓语部分符合"has/have+been+done"的结构,故此处考查的应是现在完成时态的被动语态;结合句中给出的汉语部分可知,这里应填动词replace的过去分词形式;故答案为:replaced
点评 本题考查了单词拼写.做本题时,首先结合题干中给出的汉语意思,然后从语法分析的角度去判断句中所填单词的形式;另外,在平时的学习中,需要积累一定的词汇量,牢固记忆单词的拼写,并且熟练掌握各类词法,句法等语法知识.
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