9．She _____ concerts every day since last week．（　�。�
A．was performingB．has performed
C．has been performingD．had performed

分析 從上周末她每天都在進行音樂會的演出．

解答 答案：C．根據(jù)時間狀語every day since last week可知音樂會的演出從過去開始一直持續(xù)到現(xiàn)在，而且現(xiàn)在每天都在進行，所以用現(xiàn)在完成進行時，因此答案是C．D項是現(xiàn)在完成時，不強調(diào)現(xiàn)在正在進行．

點評 考查現(xiàn)在完成進行時．perform作為動詞，主要分三層：

1．vt．&vi．上演（戲）；扮演（角色）；演奏（樂器）
如：When will the play be performed？那出戲什么時候上演？
2．vt．做/進行；完成/履行
perform one's promise 履行承諾
3．vi．運轉(zhuǎn)；行動
如：The machine performs/works well．機器運轉(zhuǎn)良好．

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