外研版高中英语Book 1 Module 4 A Social Survey ---My neighborhood grammarPresent perfect tense教学课件(共16张PPT).ppt

1、上一页下一页主菜单思考几个问题：1.现在完成时与过去时的区别 2.现在完成时与过去完成时的区别 3.非延续性动词是否有完成时？一.导二.学 按要求完成学案上的任务（1）（4）（7分钟）.Mother:John,clean your teeth please.John:Mum,I have have alreadyalready cleaned cleaned them.Mother:when did you do that?John:I had done before you came back.John:妈妈，我已经刷过了.Mother:什么时候刷的？.John:您回来之前我就刷了。三.展p

2、resent(now)futurepast现在完成时(present perfect tense)do my homework 一.现在完成时的基本含义上一页下一页They have surveyed that matter since last year.Its said it may refer to some key persons.主菜单1.表示过去发生的某一动作对现在造成的 _和_ 2.表示过去已经开始且 _的动作或状态影响结果持续到现在I have ever been to the Summer PalaceI have never heard about so moving a

3、story.3.表示人们_或到目前为止 _经历从未有过的曾有过的二.现在完成时的标志常与 already,never,ever,just,yet,before,up to now,so far,for a long time these days,since for/in/during recent/the last/the past few weeks等连用上一页下一页主菜单三.现在完成时的特殊情况1.It _ 6 weeks since I began to write this story.has beenhave warnedhave been tohas stopped2.Its t

4、he last time that I _（警告）you!3.This is one of the most attractive places that I _（曾经去过的）.4.Dont get off the bus before it _ well.非延续性动词是否有完成时？1.我买了这块手表五年了。A.I have bought this watch for five years.B.I have had this watch since 5 years ago.C.I have bought this watch 5 years agoA.The old man has died

5、since a month ago.B.The old man has died.Its said for a month.C.The old man has been dead for a month.T下一页上一页主菜单 F2.这位老人已经去世一个月了。F TF T判断正误3.我有十年没离开家乡了。A.I havent left my hometown for10 years.B.I havent been away from my hometown for 10 years.C.It has been 10 years since I was away from my hometown.

6、下一页上一页主菜单 T T T 短暂性动词可以用现在完成时，但在肯定句、疑问句中不能与时间段连用上一页下一页 为了表述这种意思,我们常用相应的延续性动词延续性动词来代替短暂性动词。比如 leave-be away(from)die-be dead borrow-keep finish-be over 但在否定句中，短暂性动词不仅可用现在完成时，还可以与时间段连用。主菜单非延续性动词是否有完成时？小结1.We have told the sports meeting might be put off.2.The detective fixed his sharp eyes upon the bo

7、x,wondering whether he has seen it before 3.I had phoned him twice in the morning but couldnt get through to him.4.It is ten years since he has left the army.5.My teacher usually arrives at 7 but hadnt turned up so far.been_had下一页上一页主菜单_hasnt四.练（改错）（二）句型转换：1.He has never come late for school,_?(改反意疑

8、问句）2.They have been here since 2000.(对划线部分提问)_?3.The old man _ last year.He _ for a year.（用动词 die 填空）4.This factory opened twenty years ago.(同义句转换)This factory _ for twenty years.5.It is five years since Miss Gao smoked.(同义句转换)Miss Gao _ for five years.6.Her mother has been a Party member for three

9、years.（同义句转换）Her mother _ the Party three years _.7.The Green Family moved to France two years ago.(同义句转换)It_ two years _ the Green family moved to France.8.He hasnt studied English for ten years.(同义句转换)It is ten years since he _ English.has he?How long have they been here?diedhas been deadhas been openhasnt smokedjoinedagohas beensincestudied总结：1.现在完成时的含义_ 2.现在完成时的标志_3.现在完成时的特殊情况_ 4,非延续性动词在现在完成时中的运用