现在完成时ppt课件优秀PPT.ppt

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1、Present Perfect Present Perfect TenseTense-现在完成时现在完成时Present perfect tense 现在完成时现在完成时v构成构成:v用法一用法一:表示过去发生的某一动作对现表示过去发生的某一动作对现在造成的影响或产生的结果在造成的影响或产生的结果.现在完成时这一时态强调是过现在完成时这一时态强调是过去动作与现在的联系去动作与现在的联系,也就是也就是强调现在的影响和结果强调现在的影响和结果.主语主语+have/has+have/has+过去分词过去分词与一般过去时的区分与一般过去时的区分 一般过去时：有表示一般过去时：有表示过去时间点过去时间点

2、的提示词的提示词e.g.She bought two movie tickets yesterday.His mother received great presents on mothers day.v1.都表示过去发生的事都表示过去发生的事v2.现在完成时强调过去和现在的联系，不能和具现在完成时强调过去和现在的联系，不能和具体的时间状语连用；体的时间状语连用；v3.一般过去时强调过去发生的事或状态与表示过一般过去时强调过去发生的事或状态与表示过去的具体时间连用（去的具体时间连用（last,ago,yesterday,etc.）presentpastI have lived here for

3、 two yearsI have lived here for two yearsI lived there 2 years agoI lived there 2 years agoeg.1.He had his breakfast at 6:00 He has had his breakfast.2.When did you come here?I watched the football match on TV at 9:00.v用法二用法二：for+段时间段时间 since+点时间点时间 since+句子（过去时）句子（过去时）E.g.Kate has lived here for 3

4、years.Kate has lived here since 3 years ago.Kate has lived here since she came to China.表示过去某个时间起先的动作或表示过去某个时间起先的动作或存在的状态，始终持续到现在并存在的状态，始终持续到现在并可能还将持续下去。动词运用持可能还将持续下去。动词运用持续性动词。常与续性动词。常与forfor或或sincesince引导引导的时间连用的时间连用 vHis father has died.(for 2 years)vThe football match has begun.(since9:00a.m)His

5、 father has been dead for 2 years.The football match has been on since 9:00 a.m.重点句型重点句型:It is/has been+段时间段时间+since从句从句 段时间段时间+has passed+since从句从句eg.他死了两年了：He died two years ago.He has been dead for two years/since two years ago It is/has been two years since he died.Two years has passed since he died.v 这本书我借了一个月了。I borrowed this book a month ago.It is/has been a month since I borrowed the book.I have kept the book for a month./since a month ago.A month has passed since I borrowed the book.