题目内容
20．So many trees and beautiful flowers_______ in this area in 2014．（ ）| A． | were planted | B． | was planted | C． | are planted |
分析 2014年在这个地区栽种了许多树和漂亮的花．
解答 答案：A．
首先根据时间状语in 2014，判断句子中的谓语动词用一般过去时，主语So many trees and beautiful flowers是动作plant的承受者，表示"被栽种"，所以用被动语态，一般过去时被动语态的构成是：主语+was/were+动词的过去分词，主语是复数名词，be动词用were，故选A．
点评 本题考查时态和语态．每个时态都有标志词，熟记这些标志词是做题的关键．在没有时间状语的情况下可以根据语境来对时态做出判断．判断语态的关键则是观察主语是谓语动词的执行者还是承受者．
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