新概念第一册语法：一般过去时一般过去时 表示过去发生的动作或大事， 常和表示过去的时间状语连用，如yesterday, last night, the day before yesterday, 3 days ago, 含有be动词的句子， 将动词变为过去式，am, is的过去式为was，are的过去式为were I was at the butcher’s. You were a student a year ago. The teacher was very beautiful ten years ago. ★变疑问句将be动词移动到句首 Were you at the butcher’s? Were you a student a year ago? Was the teacher very beautiful ten years ago? ★变否认句在be动词后面加not I was not at the butcher’s. You were not a student a year ago. The teacher was not very beautiful ten years ago. ★确定答复否认答复 Yes, I was. No, I was not. Yes, you were. No, you were not. Yes, he/she was. No, he/she was not. ★特别疑问句： What did you do? (必背) 不含有be动词的句子，将动词变为过去式，动词过去式构成见附录 I finished my homework yesterday. The boy went to a restaurant. The Sawyers lived at King Street a year ago. ★变疑问句在句首加did， 动词变为原型 Did you finish your homework yesterday? Did the boy go to a restaurant? Did the Sawyers live at King Street a year ago? ★变否认句在主语和动词之间加did not I did not finish my homework yesterday. The boy did not go to a restaurant. The Sawyers did not live at King Street a year ago. ★确定答复及否认答复 Yes, I did. No, I didn’t. Yes, he did. No, he didn’t. Yes, they did. No, they did not.。