自从到了这个学校.他一直落后其他人．Hehas been behind others since he came to this school．题目和参考答案——青夏教育精英家教网—

13．自从到了这个学校，他一直落后其他人．
Hehas been behind others since he came to this school．

分析 has been behind others．

解答答案：has been behind others．结合since he came to this school可知动作发生在过去，持续了一段时间，故用现在完成时have/has+过去分词，be behind sb落后某人，主语he，故has，be的过去分词been，故答案是has been behind others．

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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