题目内容

13．You are too late．The train _____ for ten minutes．（　　）
A．has leftB．leftC．has been awayD．leaves

分析 你迟到了，火车已经离开10分钟了．

解答 答案：C
根据ten minutes，可知应该用现在完成时态．forten minutes是现在完成时的标志词．现在完成时态表示过去发生或已经完成的动作对现在造成的影响或结果．或从过去已经开始，持续到现在的动作或状态．本题属于从过去已经开始，持续到现在的动作或状态，现在完成时态的构成：助动词have/has+过去分词．left是非延续性动词，不能和表示一段的时间状语for…连用，应该用has been away．故选C．

点评 本题主要考查动词时态，做此类题目要注意时间状语、标志词．根据上下文所表达的含义，做出判断．同时更应记清时态的构成形式．就本题而言主要考查的是现在完成时的延续性动词和非延续性动词，非延续性动词不能和表示一段的时间状语连用，应该用另一个延续性动词来代替．

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