脑洞英语语法系列课件_现在完成时.pptxVIP

现在完成时;现在完成时的结构 主语 + have/ has + 过去分词 (主语若是第三人称单数助动词用 has) 动词的过去分词 规则变化（和过去时一样） 不规则变化（特殊记）;现在完成时的标志词 for + 时间段 / since + 过去时间点(从句) already / yet / ever / never / just / recently / lately so far / in the past few years 现在完成时的用法 表示过去发生的动作,强调结果或对现在的影响。 表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。;现在完成时的句型转换 肯定句：主语 + have/has + 过去分词 + 其他. 否定句：主语 + have/has + not + 过去分词 + 其他. 一般疑问句：Have/Has + 主语 + 过去分词 + 其他? 特殊疑问句：疑问词 + have/has + 主语 + 过去分词 + 其他?;一般过去时VS现在完成时 只表示过去发生的动作或状态 (与现在无关) 表示过去发生的事情对现在造成的影响或结果 (与现在有联系) 瞬间动词VS延续性动词 have gone to VS have been to VS have been in;Sally, clean your room please.;Mom, I have cleaned my room. ;;如何表达 已经做了某事？;;Mr. and Mrs. Green have owned this house for fifty years. They moved in on their wedding day and they have lived here ever since.;The village has changed a lot during that time.;But Mr. and Mrs. Green still love it. They have never wanted to live anywhere else.;Q1: When do we use the present perfect tense? Mr. and Mrs. Green have owned this house for fifty years. They moved in on their wedding day and the have lived here ever since. The village has changed a lot during that time. But Mr. and Mrs. Green still love it. They have never wanted to live anywhere else.;现在完成时的用法 表示过去发生的动作,强调结果或对现在的影响。 表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。;Q2: Pay attention to the forms of verbs in the present perfect tense. Mr. and Mrs. Green have owned this house for fifty years. They moved in on their wedding day and the have lived here ever since. The village has changed a lot during that time. But Mr. and Mrs. Green still love it. They have never wanted to live anywhere else.;现在完成时的结构 主语 + have/has + 过去分词 注：主语若是第三人称单数助动词用 has;现在完成时的句型转换 肯定句：主?? + have/has + 过去分词 + 其他. 否定句：主语 + have/has + not + 过去分词 + 其他. 一般疑问句：Have/Has + 主语 + 过去分词 + 其他? 特殊疑问句：疑问词 + have/has + 主语 + 过去分词 + 其他?;Q3: Circle the signal words about the present perfect tense in the story. Mr. and Mrs. Green have owned this house for fifty years. They moved in on their wedding day and the have li