10．I was spending my holidays at the time，so I have no idea how it       ．（　　）
A．was happeningB．happenedC．happensD．has happened

分析 當(dāng)時我正在度假，所以我不知道它是怎么發(fā)生的．

解答 答案是B．考查時態(tài)，根據(jù)句意，事情發(fā)生的時候我正在度假，用的是過去進(jìn)行時，所以事情的發(fā)生是過去的時間，所以要用過去時，故答案選B．

點評 高考題目對時態(tài)的考查是重點，謂語動詞要與時間狀語保持一致，時態(tài)與時間是密不可分的，各種時態(tài)卻要受到時間和語言環(huán)境的限制，根據(jù)題干提供的時間或者時間狀語體現(xiàn)的時間來判斷句子的時態(tài)是最直接的解題方法，扎實的語法功底加上準(zhǔn)確的理解至關(guān)重要．

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