Question

11．昨天我到家时，他正在等我．
He was waiting for me when I reached home yesterday．．

Answer 1

分析 He was waiting for me when I reached home yesterday．

解答 答案：He was waiting for me when I reached home yesterday．这里是说昨天yesterday的事情用过去时，本句用复合句来表达，主句是他正在等我是过去正在发生的动作，用过去进行时was/were+doing，主语是he，故用was，等某人wait for，加上宾格me 我，故He was waiting for me，从句是when引导的时间状语从句，表示当…时候，主语是I，到家reach home，（reach到达时及物动词，后直接加地点）过去式是reached，故 when I reached home yesterday，故答案是He was waiting for me when I reached home yesterday．

点评 过去进行时表示在过去某一时刻或某一段时间内进行或发生的动作．其形式为 主语+was/were+V-ing．常与表示过去的时间状语连用，如：last night，last Saturday等；或者与when，while，as引导的过去时间状语连用．例如：We were watching TV from seven to nine last night．昨天晚上七点到九点的时候我们在看电视．What was he researching all day last Sunday？上周日他一整天都在研究什么？