北师大版(三年级起点)六年级上册unit 1 space lesson 3 be动词的过去式 课件.pptVIP

Unit 1 Lesson 3 Where were you ...?  ——am/is/are的过去形式 概念 结构 过去式 am/is/are表示“是、存在”等许多概念。 主语+am/is/are+介词+地点 主语+was/were+介词+地点 am/is 的过去式：was I was at school last week. She was in Harbin yesterday. It was on the moon last night. are 的过去式：were We were at swimming pool last week. They were in Shanghai yesterday. We were on Mars last week. 特殊疑问句： 特殊疑问词+was/were+主语 Where were you last month? Where were they yesterday? Where was he last week? Where were you last night? I was at home. Where were you yesterday? I was on the tree. Where were you yesterday? I was in space. Where were you last night? I was on Mars. Where were you last night? I was on the moon. Practice I was at school last week. Where were you yesterday? We were at school. I was on the moon last night. * *