题目内容
13．-Someone swam across the Yunlong Lake this morning．-I didn't see it．I __________ along the lake．（ ）
| A． | jogged | B． | will jog | C． | have jogged | D． | was jogging |
分析 --有人在今天早晨游过了云龙湖．
--我没有看见．我在沿着湖慢跑．
解答 答案：D．
根据语境"--有人在今天早晨游过了云龙湖．--我没有看见．我在沿着湖慢跑．"判断设空处的动作"沿着湖慢跑"在过去某个时刻，即"有人游过云龙湖的时候"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，主语是I，所以be动词用was，jog的现在分词是jogging；故选D．
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语境来做出正确判断．
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