初中现在完成时（共26张PPT）

What do you like doing? When did you start it? Do you … it now? Do you like swimming? When did you start? Do you swim now? How long have you swum? 结构 肯定式: 主语+have/has + 过去分词 (规则变化+ ed) (见不规则动词表) 否定式: 主语+ haven’t/hasn’t + 过去分词 … 疑问句: Have/Has +主语+ 过去分词 +…? have receive get see live teach learn lose had, had received, received got, gotten saw, seen lived, lived taught, taught learnt, learnt lost, lost give get make buy have say know go be gave , given got, got/gotten made, made bought, bought had, had said, said knew, known went, gone was/were, been I have been to China three times.一般疑问句 2. We have studied English since we were children.否定句 3. Mr Smith has visited many cities since he came to China.划线提问 Have you been to China three times? We haven’t studied English since we were children. How long has Mr Smith visited many cities?