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    7．It was the first time Mary _____ such a big opening ceremony．（　　）
    A．has attendedB．attendedC．had attendedD．should attend

    分析 这是玛丽第一次参加这样的开幕式．

    解答 答案是C．
    本题考查句型"It's the first time that"．该句型中从句的动词必须要现在完成时，但是如果把句中的is改成was，从句中必须要过去完成时．由此判断答案是C．注意区分：如果没有序数词，这时就应该是句型"It's/was time that"，这时从句中往往用过去时，也可以用"should+动词原形"．

    点评 本题考查时态．注意根据具体语境选择时态，此外关注固定句型．

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