题目内容
3．The teacher class when I the classroom at ten o'clock yesterday morning．（ ）| A． | was having，got to | B． | had，got to | ||
| C． | had，was getting to | D． | was have，got to |
分析 昨天上午十点当我进入教室的时候老师在讲课．
解答 答案：A．
结合语境推测句意是"昨天上午十点当我进入教室的时候老师在讲课．"，从句的动作发生在过去，用一般过去时，主句的动作发生在过去某个时刻，即"我进入教室的时候"正在进行着，且动作在一段时间内持续进行，所以用过去进行时，过去进行时的构成是：主语+was/were+动词的现在分词，故选A．
点评 本题考查了动词的时态．做题时，一定要特别关注有关的时间短语，这是判断句子时态的标志．在没有时间状语的情况下可以联系上下文根据状语从句的类型来做出正确判断．
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