题目内容

11．他们已经选定了一首歌参加学校的歌唱比赛．
They havedecidedonthe song to take part in the school singing competition．

分析 decided on

解答 答案：decided on．表达的动作发生在过去，对现在造成一定的影响，故用现在完成时have/has+过去分词，decide on决定…，故答案是decided on

点评 现在完成时有两种用法1．过去发生的某一动作对现在造成的影响或结果或到现在为止已经发生或完成的动作．2．表示过去发生的、持续到现在的动作或状态．

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